Which book is it that you want?　　

Whose umbrella was it that)you took away?　　

強(qiáng)調(diào)句的感嘆句式

當(dāng)It is (was)之后的部分是被強(qiáng)調(diào)的主語(yǔ)或賓語(yǔ)時(shí)，可以用What或How開頭，構(gòu)成感嘆句式。

What a beautiful painting it was that Mary showed us!　　

What remarkable intelligence it was that you have displayed!

How wonderful an idea it is that he has got!

How funny a story it was that made us laugh!

強(qiáng)調(diào)句的否定句式

有些否定句在變成強(qiáng)調(diào)句時(shí)，要把否定轉(zhuǎn)移到被強(qiáng)調(diào)的詞語(yǔ)之前。例如部分否定句，在變?yōu)閺?qiáng)調(diào)句時(shí)，要把not提到It is (was)之后。尤其是“not… until…”句式的強(qiáng)調(diào)要特別注意，應(yīng)將not置于被強(qiáng)調(diào)部分里面。例如：

請(qǐng)比較以下兩組，強(qiáng)調(diào)的角度不同。

A. It wasn’t I that made fun of him.不是我（而是別人）取笑他。

B. It was I that didn’t make fun of him. 就是我沒有取笑他。

A. It wasn’t Mary that looked down upon you. 不是瑪麗（而是別人）瞧不起你。

B. It was Mary that didn’t look down upon you. 就是瑪麗沒有瞧不起你。

All of the boys in our class don’t like football.

→It isn’t all of the boys in our class that (who) like football.

Both sisters are not interested in physics.

→It isn’t both sisters that (who) are interested in physics.

Everybody doesn’t know the answer.

→It isn’t everybody that knows the answer.

All that glitters is not gold.

→It isn’t all that glitters that is gold.

Money can’t buy everything.

→It is not everything that money can buy.

He didn’t realize his mistake until the teacher had told him.

→It wasn’t until the teacher had told him that he realized his mistake.

注意：在強(qiáng)調(diào)句式中雖然not被提前，但主句不要到裝。不可說：*It wasn’t until the teacher had told him did he realize his mistake.

（四）強(qiáng)調(diào)句的幾個(gè)注意問題

你的這個(gè)問題是涉及強(qiáng)調(diào)句式“用It is還是用It was”的問題。這與not...until...句型沒有直接的聯(lián)系。

我們可以根據(jù)原句時(shí)態(tài)，來確定用It is還是用It was。如果原句時(shí)態(tài)屬于現(xiàn)在時(shí)間范疇（包括一般現(xiàn)在時(shí)，現(xiàn)在進(jìn)行式，現(xiàn)在完成時(shí)，一般將來時(shí)等），則用It is …；如果原句時(shí)態(tài)屬于過去時(shí)間范疇（包括一般過去時(shí)，過去進(jìn)行時(shí)，過去完成時(shí)，過去將來時(shí)等），則用It was … 例如：

It is at ten o’clock that the meeting will take place.

What is it that you want me to do now?

It was not until yesterday that I heard the news.

Was it John that broke the window this morning?

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