殷妻暖婚,娇妻引入怀:英语4选1（should, had better, must, have）

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You _______ to tell me the truth if you want my help.
A. should B. had better C. must D. have

答案是D 我选了B

should ,must都是情态动词后面要加原形
had better + do
而have to是固定搭配表示不得不

意思上，你不得不告诉我真相如果你需要帮助。意思通顺，故选D

you had better + do sth, have to 是不的不，必须之意，根据题意就该选D

B 表示“识相的就告诉我实情”，语气太刚烈；

D 表示“必须，有义务这样做”，是得到我帮助的前提。

have to do sth.
had better do sth.
should do sth.
must do sth.

有to 的话，当然要选have
若没有to 四个都行，主要再考虑语境

HAVE TO DO STH = SHOULD DO STH = HAD BETTER DO STH = MUST DO STH
意思上差不多，但只有HAVE 可以跟TO

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