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【题目】The sad boy sat on the ground, shouting she was crying.
A.when
B.while
C.as
D.as soon as

【答案】C
【解析】as soon as意为“一……就……”,when,while和as 都有“当……的时候”之意,但是用法有区别,when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用;从句动作在主句动作前发生,只用 when;从句动作和主句动作同时发生,且从句动作为延续性动作时,when,while,as都可使用;当主句、从句动作同时进行,从句动作的时间概念淡化,而主要表示主句动作发生的背景或条件时,只能用 as。这时,as常表示“随着……”;“一边……,一边……”之意。本句意思是:这个伤心的男孩坐在地上,一边大喊一边大哭。根据句意只能选C。

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