1. can/ be able to (1)can表示"本能"或能够,有一般时和过去时,后接动词原形一起构成谓语。 I can sing the English song.我会唱这首英语歌。 A baby can cry when it is hungry.婴儿饿的时候会哭闹。 (2)be able to 后接动词原形,表示"能够",多指一个人经过后天的努力 从而获取的一种"能力",有各种时态。 If you work hard, you will be able to master English. 只要你努力,你一定能掌握好英语的。 .......................................................................... 2. catch a cold/ have a cold 一般情况下,这两个短语都表示"得了感冒,患了感冒"但有所侧重: (1)catch a cold 强调动作。如: It's cold outside. Go into the house or you'll catch a cold. 外面冷。到房间里去吧,不然你会感冒的。 (2)have a cold 强调状态。 I have had a cold for several days and I can't get rid of it. 我感冒已经好几天了,可还是好不了。 (责任编辑:admin) |