“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.A．whatB．howC．

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“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.

A．what

B．how

C．that

D．whether

题型：单选题难度：中档来源：不详

答案

试题分析：这里是what引导的表语从句，what在从句中作tell的宾语；表语从句里缺少的是宾语；that和whether在表语从句中不作成分，why在表语从句中不能作宾语。这里句意：“每次你吃糖的时候，你要喝绿茶”这是妈妈过去常常给我说的话。故选A。
【知识拓展】这四个词在引导表语从句的区别：what引导的表语从句，它在从句中作主语或宾语；how引导的表语从句，它在从句中作状语；that引导的表语从句，它在从句不做成分，没有词义；whether引导的表语从句，它在从句中作主语或宾语不做成分，但是有“是否”的含义。

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“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.A．whatB．howC．

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