一直在做某事

s.b. has been doing sth.

拓展英语课堂:

What would you like to try? LZ再看看原题. 我认为直接把括号去掉就可以, 意为: 你想吃/做什么? (需要语境确定具体意思)

Also different flower may not go (well).

A friend of mine wrote to me (recently).

How long has Ben (A)in America?

A studied B arrived C come D gone

The cars made in Japan are much cheaper than(B)made in America

A ones B those C such D that

过去到现在为止一直在做某个事情：

have been doing sth

过去到过去某个时间为止一直在做某个事情：

had been doing sth

你所说的has/have been done是指该工作到现在为止已经完成

have somebody doing something “让某人一直干某事”The boss had the workers working from dawn to dark.(老板让工人们从黎明一直工作到天黑.)

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