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2、注意：此種強(qiáng)調(diào)只用do/ does和did ，沒(méi)有別的形式；過(guò)去時(shí)用did ，后面的謂語(yǔ)動(dòng)詞用原形。

1、It is/ was … that … 結(jié)構(gòu)不能強(qiáng)調(diào)謂語(yǔ)，如果需要強(qiáng)調(diào)謂語(yǔ)時(shí)，用助動(dòng)詞do/ does或did。

　　　 e.g. Do sit down. 務(wù)必請(qǐng)坐。

　　　　　　　 He did write to you last week. 上周他確實(shí)給你寫了信。

　　　　　　　 Do be careful when you cross the street. 過(guò)馬路時(shí)，務(wù)必(千萬(wàn))要小心啊！

2、注意：此句型只用until，不用till。但如果不是強(qiáng)調(diào)句型，till, until可通用；因?yàn)榫湫椭蠭t is/ was not … 已經(jīng)是否定句了，that后面的從句要用肯定句，切勿再用否定句了。

(三)謂語(yǔ)動(dòng)詞的強(qiáng)調(diào)

1、句型為：It is/ was not until + 被強(qiáng)調(diào)部分 + that + 其它部分

　　　 e.g. 普通句：He didn’t go to bed until/ till his wife came back.

　　　　　　　 強(qiáng)調(diào)句：It was not until his wife came back that he went to bed.

5、注意：構(gòu)成強(qiáng)調(diào)句的it本身沒(méi)有詞義；強(qiáng)調(diào)句中的連接詞一般只用that, who，即使在強(qiáng)調(diào)時(shí)間狀語(yǔ)和地點(diǎn)狀語(yǔ)時(shí)也如此，that, who不可省略；強(qiáng)調(diào)句中的時(shí)態(tài)只用兩種，一般現(xiàn)在時(shí)和一般過(guò)去時(shí)。原句謂語(yǔ)動(dòng)詞是一般過(guò)去時(shí)、過(guò)去完成時(shí)和過(guò)去進(jìn)行時(shí)，用It was … ，其余的時(shí)態(tài)用It is … 。

(二)not … until … 句型的強(qiáng)調(diào)句

4、強(qiáng)調(diào)句例句：針對(duì)I met Li Ming at the railway station yesterday.句子進(jìn)行強(qiáng)調(diào)。

　　　 強(qiáng)調(diào)主語(yǔ)：It was I that (who) met Li Ming at the railway station yesterday.

　　　 強(qiáng)調(diào)賓語(yǔ)：It was Li Ming that I met at the railway station yesterday.

　　　 強(qiáng)調(diào)地點(diǎn)狀語(yǔ)：It was at the railway station that I met Li Ming yesterday.

　　　 強(qiáng)調(diào)時(shí)間狀語(yǔ)：It was yesterday that I met Li Ming at the railway station.

3、特殊疑問(wèn)句的強(qiáng)調(diào)句型：被強(qiáng)調(diào)部分(通常是疑問(wèn)代詞或疑問(wèn)副詞)+ is/ was + it + that/ who + 其它部分？

　　　 e.g. When and where was it that you were born?

2、一般疑問(wèn)句的強(qiáng)調(diào)句型：同上，只是把is/ was提到it前面。

　　　 e.g. Was it yesterday that he met Li Ping?

(一)強(qiáng)調(diào)句句型

1、陳述句的強(qiáng)調(diào)句型：It is/ was + 被強(qiáng)調(diào)部分(通常是主語(yǔ)、賓語(yǔ)或狀語(yǔ))+ that/ who(當(dāng)強(qiáng)調(diào)主語(yǔ)且主語(yǔ)指人)+ 其它部分。

　　　 e.g. It was yesterday that he met Li Ping.