高考英语语法词汇专项突破：03重点语法易错易混点解析(表语从句、主语从句、倒装、强调和构词法)

高考英语语法词汇专项突破：03重点语法易错易混点解析(表语从句、主语从句、倒装、强调和构词法) 本文重点总结表语从句、主语从句、倒装结构、强调句型和构词法的易错易混点，并附上相应的巩固练习及其参考答案。 【误用1】It is these poisonous products which can cause the symptoms of the flu, such as headache and aching muscles. 【指正】which改为that。 强调句型结构是“It + be +被强调部分+that/who+ 原句剩余部分”，该句型中的that不可以换成which，这一点与引导定语从句的关系代词that不同。 【运用】It was at the railway station that I met Li Ming yesterday. 【误用2】You see, Mr. Barnes, it is since I have lived very much that I can enjoy everything so well. 【指正】since改为because。 强调句型可以强调除谓语动词以外绝大部分成分，如主语、宾语、宾语补足语及状语等。但是让步状语、比较状语、since/ as引导的原因状语从句通常不能用此句型强调。 【运用】It was because she asked me about the pen that I realized I had lost it. 【误用3】It was not until late in the evening when her husband arrived home. 【指正】when改为that。 被强调部分出现了表示时间或地点的名词，也不能用when或where代替that，这与定语从句不同。辨别是否是强调句型的方法是：把it be和that去掉, 如果还可以还原成语法和意义都通顺的句子就是强调句型。本题可以还原成：Her husband didn’t arrive home until late in the evening. 【运用】It was on October 1st, 1949 that the People’s Republic of China was founded. 【误用4】It has been announced is that we shall have our final exams next month. 【指正】It改为What或者删掉is。 主语从句应该由连词引导，引导主语从句的what是连接代词，可以在所引导的主语从句中作主语、宾语、表语、定语等成分，引导主语从句的连接代词还有who，whom, whose, which，whatever，whoever 等。it是指示代词，不可以连接句子，本题如果用it，则要删掉is，那么it就是形式主语，真正的主语是后面that引导的主语从句。 【运用】What is clear is that its advantages were immediately apparent to all. It’s a great pity that they didn't get married. 【误用5】Where will the English evening be held has not yet been announced.  【指正】把will置于be之前。 主语从句、宾语从句、表语从句以及同位语从句都是名词性从句，名词性从句谓语动词用陈述语序。 【运用】That is why you see this woman before you know. 【误用6】The question is if he should have a low opinion of this research work. 【指正】if改为whether。 whether与if 在作“是否”的意思讲时在下列引导主语从句、表语从句情况下一般只能用whether，不用if：①whether引导主语从句在句首时；②引导表语从句；③if与whether都可以与or not连用，但后面紧跟着or not时只能用whether。 【运用】The question is whether he is able to do it alone. Whether there is life on the moon is an interesting question.  【误用7】No sooner they got to the plant than th