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While 和When有什么区别?跟过去进行时相关的题,1Tim was riding his bicycle ——he
题目内容：
While 和When有什么区别?跟过去进行时相关的题,
1Tim was riding his bicycle ——he saw his thecher.2.e arrived in Changchun ——it was snowing.
如果用了When,还能不能用Ing形式V?举个例子优质解答
while在这种情况下,指的是在一个持续的动作中,When 既可以在一个动作点, 也可以在持续动作中,所以这两个题第一个只能用when, 第二个两个都可以比如, While/when I was reading, Mom asked me to have lunch.When the... - 追问：
- 如果Tim was riding his bicycle when he ……，是不是后面的既可以用过去进行时，也可以用一般过去时？
- 追答：
- 是的, 比如when he was smoking. 用while的话更加好一些, 更加强调这过程(因为,在语感中,听到while,想到的无非就是转折或者过程), 但是用when也没有错.
1Tim was riding his bicycle ——he saw his thecher.2.e arrived in Changchun ——it was snowing.
如果用了When,还能不能用Ing形式V?举个例子
优质解答
- 追问：
- 如果Tim was riding his bicycle when he ……，是不是后面的既可以用过去进行时，也可以用一般过去时？
- 追答：
- 是的, 比如when he was smoking. 用while的话更加好一些, 更加强调这过程(因为,在语感中,听到while,想到的无非就是转折或者过程), 但是用when也没有错.
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