Newton was playing under an apple tree ----an apple fell ont

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Newton was playing under an apple tree ----an apple fell onto his head.
A.when B.while C.after D.before答案为什么是D呢?

选before是因为这是条件状语从句.因为fell onto是瞬间完成,所以排除while,while一般多接持续性动词,而因为是条件状语从句不是时间状语从句,所以排除when.再者after显然不合题意,所以选D.before.大概应该是这样子.

Newton was playing under an apple tree ----an apple fell ont Newton was playing under an apple()an apple fell Newton was playing under an apple tree___an apple fell onto Newton was playing under an apple treebefor an fell onto his an apple fell off the tree and ____to my feet 是a apple tree还啊an apple tree? 是a apple tree还是an apple tree? 英语翻译Upon seeing an apple fall while walking,Isaac Newton was draw an apple tree under the tree,drdw a cat colour the cat An apple fell off the tree and _to my feet.为什么填down it rolle 英语翻译In 1665,an apple fell from a tree and landed near young (An) apple fell from the tree and hit him on (the) head ?