—Mum, would you please buy me an MP5 player?—If you can help do the dishes the

题型：不详难度：来源：

—Mum, would you please buy me an MP5 player?
—If you can help do the dishes the whole vacation, you ________ have one as a reward.

A．must

B．need

C．would

D．shall

答案

D

解析

试题分析：选D。句意：——妈妈，你能给我买一个MP5吗？——如果整个假期你能帮着做家务的话，你可以得到一个(MP5)作为奖励。shall此处表允诺。must必须，need需要，would愿意，均不符合语境。
点评：情态动词是一种本身有一定的词义，但要与动词原形及其被动语态一起使用，给谓语动词增添情态色彩，表示说话人对有关行为或事物的态度和看法，认为其可能、应该或必要等。情态动词后面加动词原形。