☛It is exciting that we have succeeded in sending up Shenzhou X.我们成功地发射了神舟十号这件事情真令人兴奋。(本句若将It is 及that同时省去为:We have succeeded exciting in sending up Shenzhou X.显然句子错误,因此,本句不是强调句型,that引导主语从句,it是形式主语。)
2.强调句型与定语从句的比较
强调句型中的it没有实际意义,it is/was与that/who去掉后句子结构仍然完整。但定语从句中的it be和作主语的that去掉后句子结构不完整。
3.强调句型与状语从句的比较
强调句型中的it is/was与that/who同时省去,句子仍然成立;而包含状语从句的句子it是主语。如:
☛It was 8 o’clock when they went home.他们回家时是8点。
(句中代词it作主语,指代时间,when引导时间状语从句)
☛It was at 8 o’clock that they went home.他们是在8点回家的。
(本句是强调句型,at 8 o’clock是被强调部分)
【典型例析】
It was not until near the end of the letter _______ she mentioned her own plan.
【解析】分析句子结构可知,此处构成not until的强调句型,应填that。句意:直到将近信的结尾她才提到自己的计划。本题为强调句型,被强调部分为not until near the end of the letter。原句为:She didn’t mention her own plan until near the end of the letter.。
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