when和while的区别
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热心网友
while
意思多,
在与when
比较用时,
while
一般等于when,
意为"当".但并不代表when
=
while
具体区别如下:while后面从句只用于进行时态(过去进行时态,正在进行时态)
例:
I
am
eating,
while
my
mom
is
cooking.
Mike
took
some
photos
while
we
were
playing(注:跟主句无关,关键是从句要进行)when几乎可用于任何时态,不受*.
用专业名词讲,
when
从句谓语用终止性和延续性,而while
从句的谓语只用延续性.
Understand?
