No matter who breaks the rule， he must be punished.

　　（4）when和where引導(dǎo)的同位語從句與定語從句的區(qū)別。

　　when 和where前面的名詞若是表示時間、地點(diǎn)的名詞，則when和where引導(dǎo)的是定語從句，否則則為同位語從句。如：

　　They put forward the question where they could get the money.

　　This is the place where the accident happened.

　　2、名詞性從句中主句和從句的時態(tài)一致

　　（1）賓語從句中主句和從句的時態(tài)保持一致，但如果從句中表示提示的是客觀現(xiàn)象，雖然主句是過去時態(tài)，從句仍用一般現(xiàn)在時。如：

　　Hello，I didn’t know you were in London. How long have you been here？

　　The teacher told us that light travels at a very high speed.

　　（2）主語從句作主語相當(dāng)于單數(shù)第三人稱作主語，謂語動詞用單數(shù)，如果由and 連接兩個或兩個以上的主語從句作主語時，謂語動詞用復(fù)數(shù)；由兩個或多個連接詞引導(dǎo)一個主語從句，謂語動詞用單數(shù)。如：

　　When the meeting will begin has not been decided yet.

　　When they will start and where they go have not been decided yet.

　　When and where the meeting will begin has not been decided.

　　3、名詞性從句的詞序

　　名詞性從句在句中要用陳述句語序。如：

　　He asked me what was the matter with me.

　　We’ve heard the news that we’ll move into the new house.

　　Whatever you say will interest us all.

　　二、精典名題導(dǎo)解

　　選擇填空

　　1. A computer can only do ________ you have instructed it to do.

　　A.how B.after C.what D.when

　　解析：答案為C.本題考查的是名詞性從句作賓語的用法。此句的引導(dǎo)詞既作連詞又在賓語從句中充當(dāng)一成分，故what最合適。

　　2. —I drove to Zhuhai for the air show last week.。

　　—Is that _________ you had a few days off

　　A.why B.when C.what D.where

　　解析：答案為A.此題考查的是從句的用法。根據(jù)題意“我上周開車去珠海看航空展去了。”下面一句接著問：“那就是你為什么離開的原因嗎？”故用why引導(dǎo)表語從句表示原因。

　　3. I hate __________ when peope talk with their mouths full.

　　A.it B.that C.these D.them

　　解析：答案為A.本題考查的是形式賓語的用法。題意為“我討厭人們談話時嘴里塞滿東西”。該空白處沒有任何含義，而且已經(jīng)用了when連接該賓語從句，所以此處只填一個形式賓語it.