第45讲，假设 wish,as if+过去/过去完成时

1.wish后面的从句,译为希望...就好了，是不可能实现的假设
a.与现在事实相反愿望
I wish I were as tall as you(一般过去时)
b.与过去事实相反
He wished he hadn't said that.(过去完成时)
c.将来不大可能实现的愿望
I wish it would rain tomorrow.(Would /should /could.)
2.As if，翻译为看起来好像
a.如果从句表示与现在事实相反
You look as if you didn't care
b.从句表示与过去事实相反
He talks about rome as if he had been there before
c.从句表示与将来事实相反
He opened his mouth as if he would say something.

第46讲定语从句关系代词that,who,which,whom

定语从句:在句中作定语，修饰一个名词或代词，被修饰的名词叫先行词，其后的从句就是定语从句，由关系词(关系代词或关系副词)引
出。
1.关系代词，在从句中作一定的成分，代替先行词，起到连接先行词和从句的作用
常用关系代词:
That ,who, which, whom,whose
a.先行词是人的话用That ，who, whom, whose来引导从句。
whom,在从句中作宾语
who 和that.在从句中既可作主语又可作宾语
先行词是动物/事物的话，用which,that,whose引导定语从句
which,that在从句中可做主语和宾语，作宾语时可以省略