164 形式
A 现在进行时是由助动词 be + 现在分词（动词原形 + ing）构成的：
| 肯定式 |
否定式 |
疑问式 |
I am working
you are working
he/she/it is working
we are working
you are working
they are working |
I am not working
you are not working
he/she/it is not working
we are not working
you are not working
they are not working |
am I working?
are you working?
is he/she/it working?
are we working?
are you working?
are they working? |
否定疑问式：am I not working? are you not working?is he not working? 等
B 缩略形式：如第102节B所示，在现在时的各种形式中，be 可以缩略，所以任何动词的现在进行时形式也都可以缩略，如下表所示：
| 肯定式 |
否定式 |
否定疑问式 |
I'm working
you're working
he's working等 |
I'm not working
you're not/you aren't working
he's not/he isn't working等 |
aren't I working?
aren't you working?
isn't he working等
|
注意：aren't? 是 am I not? 的不规则的缩略形式。 |
疑问词后面的缩略形式：am，is，are 的缩略形式如第104节B所示：
Why's he working？
他为什么在工作？
Where're you working？
你在什么地方工作？ |
