It+be.。.that(who) 。..這一強(qiáng)調(diào)結(jié)構(gòu)，這種強(qiáng)調(diào)結(jié)構(gòu)用來突出強(qiáng)調(diào)句子的某一部分。該結(jié)構(gòu)中的it (the emphatic it)，無詞匯意義，只用于改變句子的結(jié)構(gòu)，使某一部分得以被強(qiáng)調(diào)。要正確使用這一結(jié)構(gòu)應(yīng)注意以下幾個(gè)方面的問題：

　　1. 這種強(qiáng)調(diào)結(jié)構(gòu)除了不能強(qiáng)調(diào)動(dòng)詞外，其他成分如主語、賓語、賓補(bǔ)、狀語都可以強(qiáng)調(diào)。

　　例如： It was my sister who first had the idea to cycle along the Mekong River from

　　where it begins to where it ends.(強(qiáng)調(diào)主語)

　　It was in Greece that Olympic competitions firstly started.(強(qiáng)調(diào)狀語)

　　2. 被強(qiáng)調(diào)的代詞格應(yīng)與原句一致;被強(qiáng)調(diào)的部分如果是原句的主語，who(that)后的謂語在人稱和數(shù)上應(yīng)與原句的主語一致。

　　例： It is Zhang Ziyi that (who) stars the film Heroes. 是章子儀主演的《英雄》這部電影。

　　It is him that I want to visit. 我想見的是他。

　　3. 如果強(qiáng)調(diào)雙賓語中的一個(gè)，不論是直接賓語還是間接賓語，根據(jù)動(dòng)詞的搭配關(guān)系，要加上一個(gè)介詞to或for。

　　例：Mr. Green gave Mary a birthday present.→It was Mary that Mr. Green gave a birthday present to.

　　It was a birthday present that Mr. Green gave to Mary.

　　4. 如果原句是一般疑問句，強(qiáng)調(diào)結(jié)構(gòu)用“be+it.。.that (who)。..?”形式;如果原句是特殊疑問句，則用“特殊疑問詞+be+it.。.that(who) 。..?”形式。

　　Is it an the end of 2001 that China joined WTO?

　　是2001年底中國(guó)加入了世貿(mào)組織嗎?

　　When was it that the tsunami struck the countries around the India Ocean? 是何時(shí)海嘯襲擊了印度洋沿岸各國(guó)?

　　5. 如果原句中含有“not.。.until”，在強(qiáng)調(diào)時(shí)間狀語時(shí)，將主句中的否定詞not連同狀語一期提前。

　　例： It was not until she took off her dark glasses that I realized she was a famous film star.

　　6. 強(qiáng)調(diào)結(jié)構(gòu)中的謂語動(dòng)詞除用be外，還可以用might be 或must have been。

　　例：It might be tomorrow that she will come.

　　It must have been an actor that came yesterday.

　　7. 強(qiáng)調(diào)結(jié)構(gòu)不但可獨(dú)立成句，也可用在從句中。

　　例： Further reading made me realize that it was hard work and determination as well as her good nature that had got her into medical school.

　　8. 被強(qiáng)調(diào)部分句子可能較長(zhǎng)或有一個(gè)以上的強(qiáng)調(diào)成分，對(duì)此就應(yīng)注意識(shí)別。

　　例：It was not the fish but the vegetable， which grows only in Sichuan， that made the hot dish sour and aromatic.

　　It was she who was lying in the corridor and the stranger who bent over her.是她躺在過道上，是那個(gè)陌生人俯視她。(此句有兩個(gè)被強(qiáng)調(diào)部分：一是she，一是 the stranger)

　　It is that intensity， along with the low cost and low risk， that causes the real danger of cyber lover.

　　9. 強(qiáng)調(diào)結(jié)構(gòu)中的時(shí)態(tài)一般應(yīng)一致，即主句與從句中的時(shí)態(tài)應(yīng)都用現(xiàn)在時(shí)，或都用將來時(shí)。

　　例： It was my two sisters who knew her best.(都用過去時(shí))

　　It will not be you who will have to take the blame for this.(都用將來時(shí))對(duì)此受譴責(zé)的將不是你。

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