强调句型。
结构：it is/was +被强调部分+that/who+其他部分辨别方法：删除法。
1.被强调部分为人时，可用that/who作连词，被强调部分为非人时，用that。所强调的成分可以是单词，短语，句子，但结构必须完整。
被强调的成分可以是主语，宾语和状语，但不能是定语或谓语。
eg. it is i who /that am right. 主语。
it was him that/who we met at the school gate. 宾语。
it was in the park that tom lost his watch. 状语。
2.一般疑问句结构：is/was it +被强调部分+that/who+其他部分。
eg. was it in 1939 that the second world war broke out?
is it professor wang who teaches you english?
was it during the anti-japanese war that he died?
3.特殊疑问句结构：在疑问句前wh特殊疑问词。
eg. who was it that broke the window.
when was it that you called me yesterday?
what is it that you want me to do?
4.有时可用it might be ..that ..it must h**e been ..that ..句型表示强调。
eg. it might be his father that you are thinking of.
it must h**e been his brother that you saw.
...until ..句型的强调句。
结构：it is/was not until +被强调部分+that/who+其他部分。
eg. he did not go to bed until ten o’ clock.
it was not until ten o’clock that he went to bed.
i did not realize she was a famous film star until/till she took off her dark glasses.
6.强调句it 与形式主语it:
eg. it is there that accidents often happen. accidents often happen there.
it is clear that not all boys like football. clear not all boys like football. 错还原法辨别。
that not all boys like football is clear.
7.强调句型：it is/was + thatit is/was +时间+ when ..
it is+ 时间 + sinceit was 短时间 ..before ..
1) 强调句型：it is/was + that ..与it指时间 is/was +时间+ when ..
eg. it was at midnight that i got back home yesterday.
it was midnight when i got here yesterday.
2) 强调句型：it is/was + that ..与 it is+ 时间 + since ..自从。到现在已有。
eg. it was two years ago that i began to learn english.
it is two hours that he spends on english every day.
it is/has been two years since i began to learn english.
3) 强调句型：it is/was + that ..与 it was 短时间 ..before ..
上述句型还有以下几个：
it was not long...before ..不久以后就。
it will not be long...before ..不久就会
eg. it was two years later that he came back from abroad.
it was two years before he came back from abroad.
2．对谓语动词的强调c
it is/was + that ..结构不能用来强调谓语。如果需要强调谓语，则要使用助动词do,did,does.
eg. do come this evening. he did write to you last week. tom does study hard now.
题组练习：1. -in my opinion, all mr white __good to his students in his class at present.
he is very strict in their study.
does does did do does do do does.
long is it __we last spent the holiday in the country together?
题组练习：3. -in my opinion, all mr white did does do good to his students in his class at present.
he is very strict in their study.
does does did do does do do does.
long is it __we last spent the holiday in the country together?
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