賓語從句用法
賓語從句是用作賓語的從句,它也是在復(fù)合句中作賓語的名詞性從句。在學(xué)習(xí)賓語從句時, 必須注意以下五個方面的問題:
一、 注意正確使用引導(dǎo)詞
1. 當(dāng)賓語從句由陳述句變化而來時,用that來引導(dǎo)從句,其中的that無具體意義,一般可以省略。如:
i hear (that) she’s going to give me a call.
li tao thought (that) the tv play was interesting.
2. 當(dāng)賓語從句由一般疑問句變化而來時, 可用if 或whether 來引導(dǎo)從句,意為“是否”。如:
david asked her if/whether she slept well last night.
3. 當(dāng)賓語從句由特殊疑問句變化而來時,用連接代詞who/whose/what/which 或連接副詞when/where /why/how 來引導(dǎo)。如:
do you know where we can stay on the island?
i don’t know why jane was late for school this morning.
二、 注意正確使用語序
在含有賓語從句的復(fù)合句中,賓語從句都要使用陳述語序,即:引導(dǎo)詞+主語+謂語+其它,還要注意原來的助動詞或情態(tài)動詞要符合相關(guān)的時態(tài)。如:
when did the train leave? i want to know. →i want to know when the train left.
does the shop close at six every day? do you know?→do you know if/whether the shop closes at six every day?
三、注意正確使用時態(tài)
1. 如果主句是一般現(xiàn)在時、一般將來時或祈使句時,賓語從句時態(tài)不受限制,可以根據(jù)實(shí)際表達(dá)的需要來確定。如:
i hear he is here today/he was here yesterday/he will be here tomorrow.
2.如果主句是一般過去時, 賓語從句應(yīng)與主句保持一致,即使用過去時態(tài)的某種形式。如:
he said he was watching tv/he had swept the floor/he would play football after school.
3. 如果賓語從句所敘述的是客觀事實(shí)、自然現(xiàn)象、科學(xué)真理等時,從句不受主句限制,用一般現(xiàn)在時。如:
everyone answered there are sixty minutes in an hour.
四、 注意否定提前
當(dāng)主句的謂語動詞為think, believe, suppose 等動詞時,且主語為第一人稱,從句的否定提前。如:
i don’t believe he is a doctor, is he?
五、 注意復(fù)合結(jié)構(gòu)
在 find, make, think 等一些可帶有復(fù)合賓語的動詞后,為保持句子平衡,常將實(shí)際賓語(主要是that 引導(dǎo)的從句)后置,而使用形式賓語it.如:
i think it important that we should learn english well.
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