1、要说一周以前,是aweekago还是aweekbefore?2、never一词后面是加原形还是可以有时态区分?如：inever(saw)(see)himagain.3、willbedoing和willdo的区别?

Question

1、要说一周以前,是a week ago 还是a week before?
2、never一词后面是加原形还是可以有时态区分?如：i never (saw)(see) him again.
3、will be doing和will do 的区别?

Answer 1

一周以前可以用a week ago,例如：I bought this skirt a week ago.我一周前买了这条裙子.
never在用的时候还要看时态：
我不会再这么做了.I will never do this again.
那以后我再没见过他.I never saw him again after that.
我从没见过他.I have never seen him before.
“不要再相信他了.” Never believe him.
will be doing表示的是在将来的某一个时刻将会正在发生的动作,或是出现在从句是条件句的主句中.例如：When he comes back from his office at seven'oclock,his wifewill be watching tv or reading novels.
will do 并不能表示将来某一时刻正在发生的意思.
I will try my best.