Which book is it that you want?　　

Whose umbrella was it that)you took away?　　

强调句的感叹句式

当It is (was)之后的部分是被强调的主语或宾语时，可以用What或How开头，构成感叹句式。

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!

强调句的否定句式

有些否定句在变成强调句时，要把否定转移到被强调的词语之前。例如部分否定句，在变为强调句时，要把not提到It is (was)之后。尤其是“not… until…”句式的强调要特别注意，应将not置于被强调部分里面。例如：

请比较以下两组，强调的角度不同。

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

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

A. It wasn’t Mary that looked down upon you. 不是玛丽（而是别人）瞧不起你。

B. It was Mary that didn’t look down upon you. 就是玛丽没有瞧不起你。

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：在强调句式中虽然not被提前，但主句不要到装。不可说：*It wasn’t until the teacher had told him did he realize his mistake.

（四）强调句的几个注意问题

你的这个问题是涉及强调句式“用It is还是用It was”的问题。这与not...until...句型没有直接的联系。

我们可以根据原句时态，来确定用It is还是用It was。如果原句时态属于现在时间范畴（包括一般现在时，现在进行式，现在完成时，一般将来时等），则用It is …；如果原句时态属于过去时间范畴（包括一般过去时，过去进行时，过去完成时，过去将来时等），则用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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