按结构分
种类 | 类型 | 例 句 |
简单句 | 主+谓 | They disappeared. 他们消失了。 |
主+谓+宾 | He likes swimming.他喜欢游泳。 We help each other. 我们互相帮助。 | |
主+谓+间宾+直接宾 | I told my friend the good news. 我把好消息告诉了我的朋友。 They sent us a telegram. 他们给我们拍了电报。 | |
主+谓+宾+宾补 | They named the boy Jack. 他们给孩子起名叫杰克。 I want everything ready by eight o’clock. 我要求一切都要在八点前准备好。 | |
主+系+表 | She is a university student. 她是一名大学生。 He has become a pilot. 他已成为一名飞行员。 | |
并列句 | 并列关系and, not only…but also, neither …nor, both…and, not…but, | Either you do it, or I ask for somebody else to do it. 要么你来做，要么我请其他人来做。 Neither Tom nor Jack has finished the homework. 汤姆和杰克都没有完成作业。 Not couldn’t they complete the task, but the task was too tough. 不是他们完不成任务，而是任务太重了。 |
转折关系but,while（而，尽管） nevertheless(然而；不过) | John likes playing basketball, but he didn’t play it yesterday. 约翰喜欢打篮球，但他昨天没打。 | |
选择关系or, otherwise or else, either…or | We must hurry, or we’ll miss the train. 我们必须快点，否则会赶不上火车。 Either you come to my place or I go to yours. 或者你到我这儿来，或者我到你那去。 | |
因果关系for, so, thus, therefore, and so | We had better stay at home, for it was raining. 我们最好呆在家里，因为天正在下雨。 He didn’t work hard, therefore he failed in the examination. 他学习不努力，因此这次考试不及格。 | |
复合句 | 由一个主句和一个或一个以上的从句构成的句子叫复合句。在复合句中主句是全句的主体，从句是全句的一个成分，不能独立。 | 从句有： 名词性从句（主语从句，表语从句，宾语从句和同位语从句） 状语从句 定语从句 （详细请看以下内容） |
II.状语从句
状语从句是每年高考必考的内容，在高考试题中加上其它从句的干扰，以及倒装句，强调句的介入，使得状语从句更为复杂。
1.时间状语从句
由下列连词引导：when,while,as,before,after,once,till,until,since,as soon as,now that,hardly…when,
scarcely…when,no sooner…than,有一些表示时间的副词(短语)或名词短语也可引导时间状语从句。如：directly,instantly,immediately,by the time，the moment,the second,the minute,the instant,every time,each time,next time,the last time等
重点内容如下：
①when,while,as引导的时间状语从句
▲as表示“当……的时候”，往往和when/ while通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。
She came up as I was cooking.(同时)
The runners started as the gun went off.(几乎同时)
▲when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。
It was raining when we arrived.(指时间点)
When we were at school, we went to the library every day.(在一段时间内)
When we arrived there,the film had already begun.(先后发生)
▲while意思是“当……的时候”或“在某一段时间里”。主句中的动作或事情在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。在when表示a period of time时，两者可以互换。
Please don’t talk so loud while/when others are working.
He fell asleep while/when reading.
Strike while the iron is hot.( 不可用as或when，这里的while意思是“趁……”)
②before状语从句的重点句型
▲……之后……才：It was a long time before I got to sleep .
▲不多久……就：It wasn’t long before he told me about the affair.
▲不等……就：Before I could get in a word, he had measured me.
▲刚……就：He hardly entered the room before he heard the telephone ring.
▲先……再：You can have a few days to think about it before you make your decision.
③since 引导的从句用延续性动词的过去式(包括过去完成时)，则从句的动作已经结束,从句意思是否定的。如果从句的动词是延续性的用完成时态，从句意思是肯定的。
▲He has never been to see me since I was ill.我病愈后，他一直未来看我。(不在生病了)
▲He has never been to see me since I have been ill.我病了，他一直未来看我。
▲I haven’t heard from him since he lived here.
自从他这里搬走，我就没有收到他的信。(不住在这儿了)
▲I know him very well since he has lived here near us.自他住在我们附近以来，我对他很了解。
▲It’s three years since I was in the army.我退伍已三年了。(不在服役了)
▲It’s three years since I have been in the army=It's three years since he joined the army.
我入伍已三年了。
④如果与till与until从句使用的主句是肯定的，则主句中谓语要用延续性动词如果与其使用的主句是否肯定的，则主句中谓语要用短暂性动词。另till从句不可以置于句首，只有until从句可以放在句首。not until 放在句首时主句要倒装。
2.原因状语从句
由下列连词引导：as(由于),because(因为), since(既然),now (that) (既然), considering that(顾及到), seeing that(由于)。
I do it because I like it.因为我喜欢我才干。(because不能与 so连用)
He couldn’t have seen me, because I was not there.他不可能见过我，因为当时我不在那儿。
Seeing (that) quite a few people were absent, we decided to put the meeting off.
由于好些人都没到会，我们决定延期开会
Now that/Since you are all here, let’s try and reach a decision.
既然大家都来了咱们就设法做一个决定吧
As she was ill, she didn’t come to the party.
由于病了，她没来参加晚会。
Considering that they are just beginners, they are doing quite a good job.
考虑到他们才刚刚学做，他们干得算很不错的了。
