如何区分定语从句和强调句

1.It was Tom thatsaw Jane at the movie theatre yesterday. 强调句，强调主语

2.It is true thathe is a man of few words. 形式主语，主从

3.It is on the island thatthey spent 10 years. 强调句，强调地点状语

4.It is the island wherethey spent 10 years. 定从

5.It is such an interesting book thatwe all like it very much. 结果状

6.It is such an interesting book thatwe all like very much. 强调句，强调宾语

7.It is such an interesting book aswe all like very much. 定从

8.It is years sinceI enjoyed myself so much. 时间状

9.It was not yet eight o’clock whenhe arrived home. 时间状

10.It will be two or three year***efore China sends a manmade spaceship to the moon. 时间状

11.The fact that he won the first prize was true.同位语从

12.The fact that he told me yesterday was true.定从

好了，我们逐一来解决。

一、强调句的结构就是“It + be … that”，这就是所谓的强调句式。强调句式可以强调除谓语动词以外的其他任何成分。判断强调句的核心依据就是把强调句式去掉，剩下的部分仍能组成一个完整的句子。也可以说，当看到句子开头是It be的形式时，先一律视为是强调句，然后再加以验证。例如：把以上句子的It is…that 去掉

1. Tom saw Jane at the movie theatre yesterday.（句子完整）

2. True he is a man of few words.（句子不完整）

3. On the island they spent 10 years. = They spent 10 years on the island.（句子完整）

4. The island they spent 10 years.(句子不完整)

5. Such an interesting book we all like it very much.（句子不完整）

6. Such an interesting book we all like very much.=We all like such an interesting book very much.（句子完整）

二、定语从句。如果验证不是强调句，再考虑定语从句。定语从句用来修饰名词，放在名词的后方。定语从句中的that是一个关系代词，在从句中要充当主语或宾语。因此从句中一定是缺少主语或宾语的。如果定语从句成分完整，就要用关系副词了。如：

It is on the date________she went abroad.

It is the date________she went abroad.

当把It is 去掉之后可以得到

on the date she went abroad 句子完整，所以是强调句，填that

the date she went abroad.句子不完整，所以不可能是强调句了，而是一个修饰date（名词）的定语从句，从句部分成分完整，所以填关系副词when

三、还有可能是it做形式主语的主语从句。引导主语从句时的that只是起到一个连接的作用，但是不可省略。形式主语可以按照句型结构来背过。

1.It be +形容词 +that

2.it be +过去分词+that

3.It be +名词+that

4.It 不及物动词+that

四、同位语从句。同位语的概念是用一个名词来解释另一个名词，两者是相互解释说明的关系。相同，同位语从句就是用一个从句来解释说明一个名词。that只起到一个连接的作用，但是不可省略。如：

The fact that he won the first prize was true.

The fact that he told me yesterday was true.

he won the first prize句子完整，所以that不可能是代词了。从句和名词fact是一个互相解释说明的关系，所以是同位语从句。

he told me yesterday句子不完整。由tell ***. sth.句型可知，tell要接双宾语，而从句缺少宾语sth.所以that是代词，充当从句的宾语，所以这就是定语从句了。

PS：其实把名词fact去掉，剩下的部分又会变成一个主语从句。

That he won the first prize was true.

变成形式主语

It is true that he won the first prize.

所以同位语从句是可以把所解释说明的名词去掉来分析的，这也是一个切入点

五、状语从句

1.such…that 和such…as

such…that引导结果状语从句，such…as引导定语从句。判断用that还是用as仍然要看从句成分是否完整。状语从句中主从句都是完整的句子，只是需要按照两句话的逻辑关系添加合适的关联词（就是状语从句的引导词）；as引导定语从句是关系代词，在从句中充当主语或宾语。as的用法就可以理解为一些固定搭配。注意区分。如：

She is such a beautiful girl ______we all like her.

She is such a beautiful girl______we all like.

we all like her 句子完整，所以填that, 构成such … that 结果状语从句

we all like句子不完整，like后缺宾语，要与such 搭配，所以填as

2.It is +一段时间+ since.从句动词可延续，句子意思相反翻译；从句动词不延续，句子意思正常翻译。如：

It is years since I enjoyed myself so much.

enjoy 为延续性动词，所以这句话要翻译成：我已经好多年没玩得这么开心了。

It is three years since I joined the army.

join 是一个不延续性动词，所以这句放要翻译成：我参军已经三年了。

3.It be +一段时间+before.肯定句翻译成：还要多久才；否定句翻译成：不久就

I will be a long time before we graduate.

肯定句，所以这么翻译：还要好久才能毕业。