重庆市万州分水中学高中英语必修三《Unit 4 Astronomy the science of the stars 语法探究That she was chosen made us very happy.她当选了我们很高兴。What caused the accident is a complete mystery.什么导致了这次事故还完全是个谜。Whoever comes to the party will receive a present.参加聚会的每个人都将收到份礼物。注意:上述例句中的主语从句都在句首,但为了使句子结构平衡,避免头重脚轻,常用it 作形式主语,而把从句放在后面。例如:It is a pity that she has made such a mistake.她犯了这样一个错误,真遗憾。It’s reported that three people were killed in the accident.据报道,事故中三人丧生。语法同步练习用适当的连词填空1._____ he said at the meeting surprised us greatly.2. It has been found ____plastics can be widely used in industry. 3. It worried her a lot _________her wallet was lost. 4. Can you tell me________ that man was?5. I wonder ____we can do about the problem of pollution.6. I know nothing about her but___ she is from Canada.7. The reason why he has been such a success is___ he never gives up.18.___is troubling me is ___I don’t have any experience in this kind of work.语法1.What,2.that 3.that 4.who 5.what 6.that7.that8.what,that2