Which of the following sentences expresses certainty?A、Bad seeds must bring bad

游客2023-10-26  25

问题 Which of the following sentences expresses certainty?

选项 A、Bad seeds must bring bad crops.
B、There must be a mistake.
C、You must be there by ten.
D、You must be joking.

答案 A

解析 情态动词。must在肯定陈述句中,可以表示说话人的主观意志,或要求对方必须做某事,如C项;也可以表示推测,指在说话人看来一定是、必然是,一般也只用于肯定陈述句,其后的不定式也可以用进行体,如C、Dr页。A项中,must表示“必然”,即根据逻辑推理必然要发生某事,意义等于will certainly,故为正确答案。
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