That she was chosen made us very hap py.
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 pres ent.
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 sh e 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 ac cident.
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 great ly.
