1 The stident was running to move the bag of rice ( )he hear

1 The stident was running to move the bag of rice ( )he heard th sound of a bike.
2 What was your father doing ()your mother was cooking in the kitchen.第一题为什么用when不用while.第二题为什么用while 不用when?

pink_in_D_minor 1年前已收到3个回答举报

小__外幼苗

共回答了14个问题采纳率：92.9% 举报

while后面一定是进行时,when是过去式,我们老师是这么讲的.

1年前

redhunter110 幼苗

共回答了13个问题举报

第一题heard是瞬间动词，非延续，不能用while，第二题cooking是延续的动作，可用while可用when

1年前

rr的肖公幼苗

共回答了3个问题举报

当句子中一个是进行时，一个是一般过去时，用when
当句子中两个都是进行时，用while

1年前

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你能帮帮他们吗

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