高三学生很快就会面临继续学业或事业的选择。面对重要的人生选择，是否考虑清楚了?这对于没有社会经验的学生来说，无疑是个困难的想选择。如何度过这重要又紧张的一年，我们可以从提高学习效率来着手!小编为各位同学整理了高三英语常考知识点有，希望你努力学习，圆金色六月梦!
1. 定义：用作主语的从句叫做主语从句。
2. 构成：关联词+简单句
3. 引导主语从句的关联词有三类：
(1) 从属连词that。 如：That they were in truth sisters was clear from the facial resemblance between them.
很明显，她们确是亲姐妹，她们的脸型很相似。
(2) 从属连词whether。如：
Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。
(3) 连接代词who, whom, whose, what, which, whoever, whatever, whichever
连接副词 where, when, how, why。如：
What she did is not yet known. 她干了什么尚不清楚。
How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚。
Whoever comes is welcome. 不论谁来都欢迎。
Wherever you are is my home ---- my only home. 你所在的任何地方就是我的家----我的家。
解释：
1. 主语从句能用it作形式上的主语。常以it作形式主语的句型有：
A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。如：
It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。
It is probable that he told her everything. 很可能他把一切都告诉她了。
B. It+be+名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.)+that从句。如：
It’s a pity that we can’t go. 很遗憾我们不能去。
It’s no surprise that our team should have won the game. 我们没赢这场比赛真意外。
C. It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句。如：
It is said that Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。
It is reported that China has sent another man-made earth satellite into orbit.
据报道中国又成功地发射了一颗人造地球卫星。
D. It+seem, happen等不及物动词及短语+that从句。如：
It seems that Alice is not coming to the party at all. Alice似乎不来参加晚会。
It happened that I was out that day. 碰巧我那天外出了。
E. It+doesn’t matter (makes no difference, etc.)+连接代词或连接副词引起的主语从句。如：
It doesn’t matter whether she will come or not. 她是否来这无关紧要。
It makes no difference where we shall have the meeting. 我们在哪里开会毫无区别。
F. 当that引导的主语从句出现在疑问句中时，要以it作形式主语，而把主语从句后置。如：
Is it true that the scientist will give us a lecture next week? 下周那位科学家将给我们作报告是真的吗?
Does it matter much that they will not come tomorrow? 他们明天不来很要紧吗?
G. 当主语从句出现在感叹句中时，要以it作形式主语，而把主语从句后置。如：
How strange it is that the children are so quiet! 孩子们这么安静真奇怪!
2.注意连接代词whoever, whatever, whichever等引导主语从句的含义
Whoever comes will be welcome. (whoever=the person who) 来的人将受到欢迎。
Whatever he did was right. (whatever=the thing that) 他所做的事情是正确的。
Whichever of you comes in will receive a prize. (whichever=anyone of you who) 你们当中不论哪个进来将会得到奖
1、 at
如： 常用词组有： at noon, at night
表示时间的 at, in, on：表示片刻的时间，at 8 o’clock，at midnight, at the end of, at that time, at the beginning of, at the age of, at Christmas, at New Year 等。
in 表示一段的时间
如：in the morning, in the afternoon, in the evening, in October, in 1998, in summer, in the past, in the future 等。
on 总是跟日子有关，on Monday, on Christmas morning, on the following, on May Day, on a warm morning 等。
2、表示时间的 since 和 from：since 表示从过去到现在的一段时间的过程，常与现在完成时连用：from 表示从时间的某一点开始，不涉及与现在的关系。一般多与现在时、过去时、将来时连用。
如：I hope to do morning exercises from today./ We have not seen each other since 1995.
3、表示时间的 in 和 after：两者都表示“在(某个时间)之后，区别在于in表示“在(一段时间)之后” ，而 after 则表示“在(某一具体时间点之后)，in 短语和将来时态连用，after 短语和过去时态或将来时态连用。
如：We’ll be back in three days.
After seven the rain began to fall.
What shall we do after graduation?
After two months he returned. 注意：after 有时也可以表示在一段时间之后(常用在过去时里)
4、表示地理位置的 in, on, to：in 表示在某范围内，on 指与什么毗邻，to 指在某环境范围之外
如：Changchun is in the northeast of China./ Mongolia is on the north of China./ Japan is tothe east of China.
5、表示“在……上”的 on 和 in：on 只表示在某物的表面上，而用 in 表示占去某物一部分，表示……上
如：There is a book on the piece of paper./ There is an interesting article in the newspaper./ He dug a hole in the wall.
6、表示“穿过……”的 through 和 across：through 表示从内部通过，与 in 有关;across 表示“穿过……”，表示从一端至另一端在表面上的通过，与 on 有关。
如：Water flows through the pipe./ The old man walked across the street.
7、in the corner, on the corner, at the corner：in the corn 表示在落，in 指角的内面;on the corner 表示“在角上” ，on 指的不是内面，也不是外面，而含内外兼有之意;at the corner指“在拐角处” 指的是拐角外附近的外面。
如：The lamp stands in the corner of the room./ I met at with him at the street corner./ He sat on the corner of the table.
8、in the end, at the end of, by the end of：in the end 作“最后”“终于”解，可单独使用，后不接介词 of;at the end of 表示“在……末梢”“到……尽头” ，既可指时间，也可以指地上或物体。不可单独使用;by the end of 作“在……结束时”“到……末为止”解，只能指时间，不可单独使用。
如：In the end they reached a place of safety./ At the end of the road stands a beautiful garden./ They decided to have an English evening at the end of this week./ by the
end of last month he had finished the novel
9、表示“关于”的 about 和 on：两者都有“关于”的意思，不过前者为一般用词，而后者表示“关于” ，为较正式的 “论述”
如：He came to tell me about something important./ He wrote a book on science
10、between, among：一般说来，between 表示两者之间，among用于三者或三者以上的中间。
如：You are to sit between your father and me./ He is always happy among his classmates.
注意：但有时说的虽然是三个以上的人或东西，如果强调的是两两相互间接关系，适用于between。
如：Agreements were made between the different countries. 在谈到一些事物或一组事物，
而把它们视为分居两边时用 between。
如：The little valley lies between high mountains.
在谈事物 间的差别时，总是用 between。
如：They don’t know the difference between wheat, coats and barley.
11、besides, except, but, except for：
besides 指除了……还有
如：All went out besides me
except 指“除了，减去什么” ，不能放在句首。
如：All went out except me.
but 与 except 意思近似，表示“除了……外”经常用在 no, all, nobody, anywhere, everything 等和其他疑 问词后面。
如：I never saw him reading anything but the newspaper.;
except for 表示“如无……就， 只是”表明理由细节。
如：His diary is good except for a few spelling mistakes.
12、表示“用”的 in 和 with：表示工具的“用” 、表示“ ，用 with，而表示材料、方式、方法、度量、单位、语言、声音等的 “用” 用 in。
如：He is writing a letter with a pen./ He wrote the letter in pencil
We measured it in pounds./ Read the text in a loud voice./ Tell me the story in English.
13、charge of 和 in the charge of：in 两者都表示 “由谁负责、照顾、管理” 区别在于： charge of 后接被照管的人或物， in the charge of 后面则跟照管的人。
如：Who is in charge of the project
The project is in the charge of an engineer
14、as, like：as 作“作为”“以……地位或身份”解。
如：Let me speak to you as a father.(事实是父亲)
like 作“象……一样”解
如：Let me speak to you like a father.(事实上不是父亲)
15、in front of 和 in the front of：in front of = before，是“在……前面”的意思(不在某物内)
in the front of 则是“在……前部”的意思(在某物内)
如：There is a desk in front of the blackboard./ The boy sat in the front of the car.
16、in, into：into 表示动向，不表示目的地或位置。
如：We walked into the park.;in 通常表示位置。
We walked in the park;
in 和 drop, fall, put, throw, break 等终止性动词连用时，也可以表示动向。
如：I have put the coin in (into) my pocket.我把硬币放进衣袋。
be / get / become used to 习惯于
be given to 喜欢;癖好
be related to 与…有关系
be addicted to 沉溺于;对…上瘾
be opposed to 反对
devote oneself to献身于;专心于
be devoted to 致力于;忠诚于
be admitted to 被…录取;准进入
be reduced to 沦为
reduce…to…使…沦为
be attached to附属于;喜欢;依恋
be adjusted to 适应
be known to 为…所知
be married to 和…结婚
be sentenced to被判处
be connected to 和…连在一起
be exposed to 暴露于;遭受
be compared to 被比喻成
compare… to…把…比作…
be engaged to 与…订婚
be / become / get accustomed to // accustomed to 惯于;有…习惯
be engaged to 与…订婚
get down to 着手做
lead to 导致
object to反对;不喜欢;不赞成
put one’s mind to全神贯注于
give rise to 引起
look forward to 盼望
stick to 坚持
pay attention to 注意
attend to 专心;注意;照料
see to 负责;注意
contribute to对…作贡献;有助于
make contributions to对…作贡献
apply oneself to 致力于
come close to几乎;将近
reply to 回答
add to 增加
add up to 加起来
in addition to除…之外
turn to转向;求助于
feel up to 能胜任于
look up to 尊敬
admit to承认
belong to 属于
take to 喜爱;开始
cling to 附着
fall to 开始
respond to 回答;对…作出回应
accustom oneself to 使自己习惯于
amount to等于
prefer… to…更喜欢
set an example to 给…树立榜样
refer to 谈到;参考;查阅
agree to sth. 同意某事(比较：agree to do sth. 同意做某事)
prefer… to…更喜欢
take / make a trip to到…地方去
join…to…把…和 …连接起来
turn a blind eye to对…视而不见
turn a deaf ear to 对…充耳不闻
show honor to向…表示敬意
put an end to(bring… to an end) 结束
set fire to 放火烧……
drink (a toast) to 为……干杯
propose a toast to 提议……
happen to… 发生了……事
occur to sb. 想起;想到
total up to 总计达
be close to 几乎;将近
hold to 坚持;抓住
help oneself to 随便用……
hold on to 抓住;固守
do harm to 对……有害处
do wrong to 冤枉某人
date back to 追溯到
when it comes to… 谈到……时
come to 来到;达到;结果为 (比较：come to do sth逐渐做某事)
give an eye to着眼于
have an eye to doing 打算
the key to ……的答案
describe to 向……描述
treat sb. to sth. 请某人吃……
trust sth. to sb.把某物委托给某人
pay a visit to 参观……
access to 进入;取得的方法
be a stranger to 不习惯;对……陌生
on one’s way to 在去某处的路上;在达成某事的过程中
be kind to 对……和善
be important to 对……重要
be senior to 年龄长于……
be equal to 和……相等
be particular to ……所特有的(比较：be particular about 对……过于讲究;挑剔)
be subject to 服从;隶属;易遭\受\患
be familiar to 为 ……熟悉
be similar to 和……相似
be open to 对……开放
be loyal to 对……忠诚
be helpful to对……有益处
be useful to对……有用
be good to sb对某人好(比较：be good for 对……有益处)
be bad to 对……不好
be bad for(比较：对……有害处)
be new to 对……不习惯;对……陌生
as to 关于;至于
next to(否定词前)几乎;
be due to do sth.预定要做某事
next to ……的旁边
due to 由于;归因于……
thanks to 多亏了;由于
owing to 由于;因……的缘故
in / with regard to 关于
in /with relation to 关于;就……而论
subject to 在……条件下;依照
be given to 沉溺于
be related to 与…相关
get down to着手做
lead to 着手做
object to / be opposed to 反对
put one’s mind to全神贯注于
be equal to 胜任
devote oneself to献身于
give rise to 引起
look forward to 盼望
pay attention to 注意
lead to通向 see to 负责
access to 接近(某地的)方法
be addicted to 沉溺于… 对…上瘾
according to 根据
contribute to 为…作贡献
如：
1. access to 接近,进入(某地的)方法; 通路
The only access to that building is along that muddy track.
到那栋建筑的通路是沿着那条泥泞的路走。
2. according to 按照,依照,视……而定
The work was done according to his instructions.
3. be addicted to 沉溺于……,对……上瘾
He became addicted to the drug.
他上了毒瘾。
4. belong to 属于
This dictionary belongs to me.
这本词典是我的。
5. contribute to 为……做贡献,为……撰稿
Everyone should contribute what he or she can afford to society.
人人都应该尽自己的能力为社会做贡献。
6. devote to 献身，致力于……
He has devoted his life to helping disabled people.
他一生献身于帮助残疾人。
7. due to 因为,由于……而起
His lateness was due to the very heavy traffic on the motorway.
他迟到是因高速公路上车辆过多所致。
8. be equal to 与……相当,有能力胜任……的
Bill is quite equal to running the office.
比尔的能力足以管理这个部门。
9. get close to 靠近,接近
Today many people like to go out to get close to nature.
如今许多人喜欢到户外去接近大自然。
10. get down to 开始做某事,认真处理某事
It’s time I got down to some serious work.
我该认真干点正事了。
11. hold to 忠于……,坚持,遵循
Whatever your argument, I shall hold to my decision.
不管你怎样争辩,我将坚持我的决定。
12. help oneself to 自取,自用(食物,饮料等)
Help yourself to a cigarette.
请随便用香烟吧。
13. look forward to 盼望,期待
We are so much looking forward to seeing you again.
我们非常盼望再见到你。
14. lead to 导致
This misprint led to great confusion.
这个印刷错误造成很大的混淆。
15. prefer…to…两者间更喜欢……
I prefer walking to cycling.
我愿意步行,不愿意骑自行车。
16. pay attention to 注意
Pay attention to what the teacher is talking about!
注意老师说的话!
17. refer to 提到,涉及到,关系到,参考,查阅
What I have to say refers to all of you.
我要说的事和你们大家都有关。
18. relate to 与……有关,涉及……
Wealth is seldom related to happiness.
财富鲜于幸福有关。
19. see to 照看或处理某事物
Will you see to the arrangements for the next committee meeting?
你来处理下次委员会会议安排,好吗?
20.stick to 坚持,不改变或不放弃
We don’t want to hear your opinions; stick to the facts!
我们不想听你的想法,只讲事实!
21.turn to 转向,求助于,转而做
The more depressed he got, the more he turned to drink.
他情绪越低落越是借酒浇愁。
22.used to 习惯于……,适应……
She is quite used to working hard.
她很习惯做艰苦的工作。