爱华网复合句分为并列复合句和主从复合句，在英语试题中，复合句占有较大的比例，那复合句应该怎么正确使用呢?以下是由爱华网小编整理关于复合句的用法的内容，希望大家喜欢!
复合句的用法一、状语从句
状语从句又可分为时间、地点、目的、原因、结果、行为方式、条件、让步及比较等几种形式。
1. I’ll go with you as soon as I ____ my work.
A. will finish B. shall finish C. finish D. finished
答案：C。在时间、条件状语从句中，主句如果是一般将来时，从句要用一般现在时;如果主句是过去将来时，从句可以用一般过去时。能够引导时间状语从句、条件状语从句的从属连接词，常见的有when，until，as long as，if，unless等。如：
(1) Unless he comes, we won’t be able to go.
(2) Lu Xun often said, “As long as I am alive, I shall go on studying.”
2. No sooner _____ the news than they rushed out into the street.
A. they heard B. they had heard C. did they hear D. had they heard
答案：D。no sooner…than，hardly…when表示“—……就”，主句一般用过去完成时，从句用一般过去时，如果hardly，no sooner，scarcely放句首，主谓要倒装。
3. Although he is considered a great writer, ____.
A. his works are not widely read
B. but his works are not widely read
C. however his works are not widely read
D. still his works are not widely read
答案：A。这是一个让步状语从句，主句与从句之间有一个从属连词although，不能再加but，however，still等。
4. ____ Mr Smith is well again, he can travel.
A. Now that B. But that C. And that D. Since that
答案：A。now that相当于since。引导原因状语从句的连接词常见的有because，as，since，seeing that，considering that等。
5. It was ____ a hundred people looked lost in it.
A. so large a room that
B. so large a room
C. such large a room that
D. a such large room
答案：A。引导结果状语从句：so+adj.(adv.)+that从句;so+adj.+a(an)+n.+that从句;such+a(an)+ adj.+n.+that从句，表示“这样……(一个)……以至于……”。
二、定语从句
担任定语功能的句子称为定语从句。在做定语从句的练习时，首先应该找出先行词，然后再确定选择关系代词或关系副词。能够引导定语从句的关系代词和关系副词有who， whom，whose，that，which，when，why，where。
1. She heard a terrible noise, ____ brought her heart into her mouth.
A. it B. which C. this D. that
答案：B。在非限定性定语从句中，关系代词用which不能用that。
2. He paid the boy $10 for washing ten windows, most of ____ hadn’t cleaned for at least a year.
A. these B. those C. that D. which
答案：D。如果选A、B、C选项，整个句子不符合语法要求，因此只能是一个非限定性定语从句，在非限定性定语从句中关系代词一般用which。
3. Finally the thief handed in everything ____ he had stolen to the police.
A. after B. what C. whatever D. that
答案：D。A、B、C不能引导定语从句。当先行词是all，something，everything等时，关系代词要用that。
4. The man ____ talked to you just now is an engineer.
A. who B. where C. which D. what
答案：A。先行词是the man指人，关系动词who指人在定语从句中作主语。
三大类型复合句怎么准确使用名词性从句
在整个复合句中起名词作用，充当主语、宾语、表语和同位语等的各种从句，统称为名词性从句。名词性从句主要有以下几种：
1. that 引导的从句
e.g. It is reported that one third of Guangzhou citizens planto buy a private car. (据报道，三分之一的广州市民打算购买私家车。)
2. whether/if 引导的从句
e.g. Whether motorcycles should be banned in Guangzhouhas become an issue of controversy.(广州是否禁摩托车成了有争议的话题。)
3. how/why/when/where引导的从句
e.g. This essay aims to explore why so manywhite collar workers suffer from insomnia. (本文将探讨为什么这么多白领失眠的原因。)
4. who/whom/whose/what/which引导的从句
e.g. Who should be responsible for theenvironmental degradation is still unknown.(谁对环境恶化负责还不清楚。)
形容词性从句
具有形容词功能，在复合句中做定语的从句被称之为形容词性从句或定语从句。被修饰的名词、词组或代词被称为先行词。形容词性从句分为两种类型：
由关系代词 who, whom, whose, that, which, as引导的从句。
例如：People who arestrongly against human cloning claim that it is immoral and unethical.(强烈反对克隆人的人们认为这样做不道德和不合伦理)
副词性复合句
因为坏人带枪，如果警察不配枪市民就很危险了
As evil people always have guns, it is dangerous for citizens if the police do not carry them.
由于女性的体质不同于男性，她们在军队的激烈竞争中比不过男性
Because women’s physiques are different, they are not so capable as men in the fiercely competitive world of the military.
如果我们推倒老建筑，我们就破坏了文化遗产和传统价值
If we tear down the old building, we are ruining the culture heritage and the traditional values as well.
记者应该相当的客观，尽管完全客观是难以达到的，因为每个人都有自己的观点和意见。
Journalists should be reasonably objective, though complete objectivity will be different to achieve, as everyone has their own opinions and standpoints.
就象年轻人可以停下工作享受休闲时光，老年人也应该被允许继续工作
Just as young people can choose to stop working and enjoy their leisure time, old people should also be allowed to continue working.
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