Sometimes the boy is a bad-tempered child, but he ____ be quite lovely when he wishes.
A.mayB.canC.shallD.must
B

試題分析:句意:有時(shí)候,這個(gè)男孩的個(gè)脾氣很壞的男孩,但是,只要他樂意,他也可能是非常溫順可愛的。can, could表達(dá)推測(cè)時(shí),一般用于疑問句和否定句中;can用于肯定句中表示一種理論上的可能性,并不牽涉是否真的會(huì)發(fā)生,在這種用法中can只能與動(dòng)詞原形連用。
點(diǎn)評(píng):情態(tài)動(dòng)詞表推測(cè)時(shí)高考必考點(diǎn)。can多用于否定句中表強(qiáng)烈的否定。must多用于肯定句中,表強(qiáng)烈的肯定。注意沒有mustn’t不表否定推測(cè)。shall除用于第一、三人稱外,還可以用于宣布法律規(guī)定的要求。
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