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含义： 表示现在
正在进行的动作。
结构：
is/am/are + doing
例句：
I am having an English class.
过去进行时的肯定式
I was having an English class at this time yesterday.
过去进行时的疑问式
I wasn’t having an English class at this time yesterday.
过去进行时的否定式
Were you having an English class at this time yesterday?
What is he doing now?
What was he doing at three
o’clock yesterday afternoon?
He football.
was playing
.
He is playing football.
What are they doing now?
They
What were they doing
at ten last night ?
They
are dancing.
were dancing.
What were these children doing at 10:00 last Sunday morning?
Li Lei
the twins
Joy