The article suggests that when a person _________ under unusual stress he should be especially careful to have a well-balanced diet.?
A．isB．wereC．be　D．was ?
A?
動(dòng)詞時(shí)態(tài)題。suggest后接賓語從句時(shí),如果suggest意為“建議”,賓語從句的謂語動(dòng)詞應(yīng)用虛擬語氣:should+動(dòng)詞原形或用動(dòng)詞原形。但是本題suggest引導(dǎo)的賓語從句中,主句是he should be...,用的是should+動(dòng)詞原形的形式,而空格處需要填入的是when引導(dǎo)的時(shí)間狀語從句中的動(dòng)詞,所以不必用虛擬語氣。而且從句說的是一般規(guī)律性事情,用動(dòng)詞的一般現(xiàn)在時(shí)就行了。
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