句子的完整性是其基本要求。在英語的句子中，有些動(dòng)詞除一個(gè)賓語外，句意還不完整，必須加上賓語補(bǔ)足語才能將句意表達(dá)完整，因此賓語補(bǔ)足語是許多句子不可缺少的一部分，是句子的主要成分。這樣的句型為：主語+謂語動(dòng)詞+賓語+賓語補(bǔ)足語。
常用的及物動(dòng)詞有：think，make，have，get,consider，find，call，let等。如：They found the room cleaned by someone.
賓語補(bǔ)足語的幾種類型：
1.名詞作賓語補(bǔ)足語
We think him a bright boy.
They call her XiaoZhang.
2.形容詞及短語作賓語補(bǔ)足語
I found the dog dead.
Exercise makes you healthy and strong.
3.不定式及其短語作賓語補(bǔ)足語
She often asks me to help her with her English.
注：在使役動(dòng)詞make，let，have及see，watch，notice，observe，hear，listen to，find，feel等動(dòng)詞后的賓語補(bǔ)足語可用不定式，但不定式不可加to。
Nobody heard him cry for help.
I often see the boys play basketball after school.
4.現(xiàn)在分詞及其短語作賓語補(bǔ)足語
The teacher caught her cheating in the exam.
They often hear me practising speaking English.
5.過去分詞及短語作賓語補(bǔ)足語
He raised his voice to make himself heard clearly.
When I went downstairs,I found my bike stolen.
6.as引出的賓語補(bǔ)足語
We consider her as a great writer.
We took English as a useful tool.
7.介詞短語賓語補(bǔ)足語
Please make yourself at home.
The illness kept her in bed for a month.
8.副詞作賓語補(bǔ)足語
Did you find them in?
She ordered them away.
9.從句作賓語補(bǔ)足語
We will soon make our school what your school is now.
注：當(dāng)復(fù)合賓語中的賓語是不定式、動(dòng)名詞或賓語從句時(shí)， 往往把賓語放在它的補(bǔ)足語后，而用it作句子的形式賓語，放在賓語補(bǔ)足語之前。如：
I think it wrong to smoke in public.
I find it hard to learn English well.
She kept it secret that she hadn’t passed the exam.
