__ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.A.if B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.

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__ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.A.if  B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.

__ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.A.if B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.
__ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.A.if  B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.

__ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.A.if B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.
_If_ water gets on the floor ,it cannot go anywhere and must be cleaned up with a towel.
A.if B.while请问应当选择那一个呢,越详细越好,最好带语法的那一种.
回答:选择:A If.If water gets on the floor,是条件状语从句,在全句中作状语,表示若、假设之意.

如果水8倒到地板上y了e,你必须马w上z把它清理干o净,不r能让它流得到处都是。
2011-10-31 6:46:05

选if
这是假设条件状语从句,如果水洒在地板上,它不会流到别处,必须用拖布擦干净。
if和while都可以引导条件状语从句,但是用while引导的假设条件状语从句表示如果怎样时,一般都能用if来代替,但是if表示如果时,使用的范围更广,所以一般都选if。除非一种情况,while引导的状语从句,表示对比或者表示“当什么什么时候“的意思时,if不能代替while。
也就是说,当...

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选if
这是假设条件状语从句,如果水洒在地板上,它不会流到别处,必须用拖布擦干净。
if和while都可以引导条件状语从句,但是用while引导的假设条件状语从句表示如果怎样时,一般都能用if来代替,但是if表示如果时,使用的范围更广,所以一般都选if。除非一种情况,while引导的状语从句,表示对比或者表示“当什么什么时候“的意思时,if不能代替while。
也就是说,当这两个词同时出现,且需要表示假设的时候,选if。

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