【高中英语】2018最新人教新版高中英语必修三习题课件:4.2
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Unit 4Section ⅡⅠ.语法填空1.That the universe began with the “big bang” has been widely accepted.解析:句意:宇宙开始于“大爆炸”已被广泛接受。
从句中意义完整,只需要引导词。
2.It has been proved that having a balanced diet helps to keep healthy.解析:句意:据证明拥有一个均衡的饮食有助于保持健康。
it为形式主语,后面从句为真正的主语,且从句意义完整。
3.It is a fact that English is being accepted as an international language.解析:句意:英语正被接受成为国际性语言是一个事实。
此处用it作形式主语,that从句为真正的主语。
4.What made the parents proud was that their son had been admitted to a key university.解析:第一个空用what引导主语从句,what在该从句中充当主语;was后为表语从句,该从句中不缺少任何成分,故用that引导,且不可省略。
5.It worried him a bit that his memory was becoming worse.解析:it为形式主语,真正的主语从句中不缺少任何成分,故用that引导主语从句,且不可省略。
6.Whether their flight will arrive on time is what they are concerned about.解析:根据语境,主语从句应用whether引导,表示未定的事;what引导表语从句,在从句中作are concerned about的宾语。
7.What makes the book so extraordinary is the creative imagination of the writer.解析:主语从句缺少主语要用what引导。