Question

had been doing是什么用法？

Answer 1

过去完成进行时的用法，表达的是动作在过去某一时间之前开始并延续到过去的这个时间，这一动作可能还在进行，也可能已经停止。

do用作动词，即可用作及物动词也可用作不及物动词，可接名词、代词、动名词、从句作宾语,也可接同源宾语; 还可接双宾语；用作名词时表示注意事项，聚会等含义。

例句：He does nothing but eat and drink。

他除了吃喝之外，什么也没做。

“do”的例句：

1、The kitchen's always so messy after we've had guests. Give me a hand to do it over,will you

家里来了客人之后，厨房总是那么乱，请你帮助我们清扫一下好吗？

2、Never link the audio out to the vcr and the monitor by connect them to each other as you will do at

千万不可象许多人在家里做的那样将音频连接到VCR和监视器上。

3、"He picked up a strange cat and it bit him." "More fool him; he should have known it would do that

"他捡起一只陌生的猫，被它咬了一口。""我觉得他那样做真傻。他早该知道那猫是会咬人的。"

4、No crops were planted. Except in north-west Europe and the far northland it was all Man could do to

没有种植任何庄稼。除欧洲西北部和再靠北方的地区外，人类要想在那里生存是不容易的。