一、關(guān)于結(jié)構(gòu)中的that

此結(jié)構(gòu)中，除強(qiáng)調(diào)的是作主語或賓語的人時(shí)可以用who外，其它任何情況都只能用that。如：

It was Kate that/who told me about it. 是凱特告訴那件事的。

It was yesterday afternoon that she told me about it. 是昨天下午她把那件事告訴我的。(that不能用when替代)

二、關(guān)于結(jié)構(gòu)中be的形式

原句中謂語動(dòng)詞是過去式，強(qiáng)調(diào)結(jié)構(gòu)的be用is，原句謂語動(dòng)詞是現(xiàn)在時(shí)或?qū)頃r(shí)，強(qiáng)調(diào)結(jié)構(gòu)的be用was。如：

It is he that likes playing games. 是他喜歡打游戲。

It is tomorrow that we will have a meeting. 是明天我們要開會(huì)。

注：be有時(shí)與表示推測(cè)的情態(tài)動(dòng)詞連用。如：

It must be John that/who cleaned the room. 一定是約翰打掃房間的。

三、關(guān)于主謂一致問題

被強(qiáng)調(diào)的是原句的主語時(shí)，要注意that/who后的謂語動(dòng)詞與原句主語一致。如：

It is I that am in trouble. 是我陷入了困境。

It is you that are wrong. 是你錯(cuò)了。

四、強(qiáng)調(diào)結(jié)構(gòu)的省略式

—Who is making so much noise in the garden? 誰在花園里吵鬧？

—It is the children. 就是那些小孩呀。(=It is the children that are making so much noise in the garden. )

五、如何強(qiáng)調(diào)否定句

要將not一同強(qiáng)調(diào)，構(gòu)成It is/was not…that…

It is not he that/who studies French. 學(xué)法語的不是他。(原句：He doesn’t study French. )

六、如何強(qiáng)調(diào)雙賓語

無論強(qiáng)調(diào)哪個(gè)賓語，都必須根據(jù)動(dòng)詞的搭配關(guān)系，加上to或for。如：

原句：He gave Mary a pen.

強(qiáng)調(diào)直接賓語：It was Mary that he gave a pen to.

強(qiáng)調(diào)間接賓語：It was a pen that he gave to Mary.

七、強(qiáng)調(diào)結(jié)構(gòu)作賓語時(shí)的語序

要與陳述句語序相同。如：

I don’t know where it is that he has gone. 我不知道他去哪里了。

八、強(qiáng)調(diào)結(jié)構(gòu)與類似句型的區(qū)別

判斷是否是強(qiáng)調(diào)結(jié)構(gòu)的方法是：去掉it is/was和that后，剩余部分(經(jīng)調(diào)整后) 是否依然是個(gè)完整的句子，若是，就是強(qiáng)調(diào)結(jié)構(gòu)，否則就不是。

It is a pity that you could not come. 真遺憾，你不能來。(去掉It is和that后，句子不成立，是形式主語句型)

It was at ten that he got home. 他是十點(diǎn)回到家的。(去掉it was和that后，原句可調(diào)整為He got home at ten. 句子完整正確，故這是強(qiáng)調(diào)結(jié)構(gòu))