1.Teachers suggest that parents_______ their children under 12 to ride bicycles to school for safety.(  )
A.not allowB.do not allowC.mustn't allowD.couldn't allow

分析 老師建議父母他們12歲以下的孩子不應該允許騎自行車上學.

解答 A考查虛擬語氣.通過分析句子結構,可知這個句子中包含了一個省略了that的賓語從句.這里recommend 是建議,所以賓語從句用虛擬語氣,should+動詞原形,should可以被省略.

點評 在表示建議 suggest、advise、propose;要求demand、desire、request;決定 decide;命令 order、command、require;堅決主張 insist;等動詞后跟賓語從句,用(should)+v.(虛擬語氣)eg.

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