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Yes, I’d love to.
I’m sorry I can’t.
have a class / climb
read / come in
Darren was having a class.
Michael was climbing.
Darren was having a class while
Michael was climbing a mountain.
Darren was reading a book.
Michael came in.
Darren was reading when Michael
came in.
Look at the pictures and make sentences with while or when.
The use of “while” and “when”.
“When” means “at or during the time that…”.它
既可指一个时间点，又可指一个时间段；
可与延续性动词连用，也可与非延续性动
词连用,表示主句与从句动作同时或先后
发生。
“While” means “during the time that something
is happening” or “at the same time as
sth. is happening” .只用于指一个时间段
（只能与延续性动词连用),表示主句
与从句动作同时发生。
Look at the pictures and make sentences with while or when.
3
run / swim
dance / sing
Maria was swimming while Jane was running.
Michael was singing while Sally was dancing.