You ____ buy the TV guide for next week.I have already bought a copy.A.must B.had to C.need D.could我怎么都想不明白,感觉不对,到底选哪个呢?

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You ____ buy the TV guide for next week.I have already bought a copy.A.must B.had to C.need D.could我怎么都想不明白,感觉不对,到底选哪个呢?
You ____ buy the TV guide for next week.I have already bought a copy.
A.must B.had to C.need D.could
我怎么都想不明白,感觉不对,到底选哪个呢?

You ____ buy the TV guide for next week.I have already bought a copy.A.must B.had to C.need D.could我怎么都想不明白,感觉不对,到底选哪个呢?
从意思上看 没有表达出必须买的意思啊 没有必要用must 或 have to 只是说你需要一个电视指南 我已经买了一个copy版本 d 的could也道理 意思上前后没什么联系而且也没必要用过去时

其实用better(最好去买)是比较恰当的

用could也可以 , could表示比should更加委婉的建议或劝告(见人教版新课标英语八年级上册)
need表示客观的需要,不太客气。

“need”既可以作情态动词,也可以作实义动词,但是它们的用法不同。 作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同:在限定动词词组中总是位居第一,没有非限定形式,即没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;情态动词之间是相互排斥的,即在一个限定动词词组中只能有一个情态动词。“need”作为实义动词时,通常用法是:...

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“need”既可以作情态动词,也可以作实义动词,但是它们的用法不同。 作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同:在限定动词词组中总是位居第一,没有非限定形式,即没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;情态动词之间是相互排斥的,即在一个限定动词词组中只能有一个情态动词。“need”作为实义动词时,通常用法是:
人+need +to do
物+need +doing
物+need +to be done
可以发现need后面动词可以加to也可不加意思没有区别,都可以表示需要。
“你需要(应该)买一个电视指南,我就已经买了

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