1.It is careless         him to lose his wallet again.I think it necessary       him to be more careful next time.( 。
A.of; toB.of; forC.for; forD.for; to

分析 他太粗心了,再次丟了錢包.我認(rèn)為下次他有必要更小心.

解答 答案:B
這是句型"it's+adj+for/of+sb.+to do sth"中,如果形容詞是描寫不定式行為者的性格或品質(zhì)的,用介詞of;如果僅僅是描述事物則用for.第一空前面的careless描述人的性格,第二空前面的necessary描述動(dòng)作行為本身.故選B.

點(diǎn)評 本題考查介詞的辨析,介詞的用法一般都是固定的.熟記介詞的用法及結(jié)合語境是解答本題的關(guān)鍵.

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