题目内容
10.雾霾天时,戴口罩有助于防止受污染的空气损害我们的健康.On smoggy days,wearinga mask can help stop the polluted air from
doingharm to our health.
分析 wearing harm
解答 答案:wearing harm 通过中英文句子的比对,可知英文句子中缺少"戴着"和"损害"的表达."戴着口罩"应使用动词短语wear a mask,本句中的动词wear作主语,所以使用其动名词形式;表达"损害…"时,前面已经出现了动词do,故使用短语do harm to,所以答案是wearing harm.
点评 做补全句子类的题时根据句意确定句中所缺的短语,同时兼顾语法知识,如本题中的动名词作主语便可填入正确的答案
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