be 动词ing是什么时态

be+动词ing形式可以用于进行时 ,包括现在和过去进行时,关键在于be动词的形式。

比如：I am reading a book.

we were singing last night.

也可以用进行时表示 将来时.

比如She is going shopping tomorrow .

扩展资料

例句：

1、I know what I'll be doing for the next three weeks but I haven't thought beyond that.

我知道我未来三周要干什么，但再往后我还没有想过。

2、If you are in any doubt as to whether you should be doing these exercises, consult your doctor.

如果你拿不准是否应进行这种锻炼，咨询一下医生好了。

3、What can they be doing?

他们究竟在干些什么呢？

You can't be doing two things at once

不能一心二用。

4、I have started planning out what I shall be doing next week.

我已开始详细安排下周要干的'事儿了。

5、Anyone could be doing what I'mdoing

我在做的事，谁都可能正在做。

6、He might be doing a spot of gardening if the weather is fine.

天气晴朗的话，他也许会侍弄侍弄花草。