关于after和before的疑问? after是一个介词,有说after doing的, 那么有没有说before doing的? 比如这个, after finishing my homework,i am going to bed. 可不可以说, i can not go to bed,before finishing my homework 能不能在给我几个例子?
人气：426 ℃ 时间：2020-05-19 23:59:32
解答
i can not go to bed,before finishing my homework 完全可以 after .before都可以作介词,也都可以作连词.意思一样,也就是用法不一样.作连词时,连接的两句话.作介词时,后面跟的是名词或动名词. 比如,after finishing my homework,i am going to bed.= i am going to bed after i finish my homework.不过从简洁的角度来讲,这句话用介词的用法更好些.
