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下面我们用代换方式练习怎么劝别人在过去应该作某件事. 练习的内容都是 说到彼得告诉玛丽他在前一天晚上吃多了肚子疼之后,玛丽劝彼得的话,比方 彼得既然吃饱就不应该再吃, 应该小心的选择食物, 肚子疼就应该看大夫,吃 药, 躺下来休息等等. 练习的作法是玛丽说一句话, 然后老师会念出一个用 过去分词开头的词组, 请你跟玛丽一起把词组代换到原来的句子里.
F: You should have stopped eating when you were full.
M: eaten less
F: You should have eaten less.
M: been more careful about what you ate
F: You should have been more careful about what you ate.
M: chosen the right things to eat
F: You should have chosen the right things to eat.
M: had dinner at home
F: You should have had dinner at home.
M: gone to a doctor
F: You should have gone to a doctor.
M: taken some medicine
F: You should have taken some medicine.
M: lain down and rest
F: You should have lain down and rest.
三.MUST HAVE
下面一组练习是用 must have 加上动词过去分词来表示自己认为过去一定发 生的事情. 比方玛丽听说彼得前一天晚上吃那么多就下结论说:当时你一定觉 得很不舒服; 你肚子疼一定是吃太多, 太快了, 等等.
练习的作法是玛丽说一句话, 然后老师说出一个动词词组请你用动词过去分 词作代换练习. 每作完一个句子, 老师就会念出正确答案给你听.
F: You must have felt sick.
M: feel terrible
F: You must have felt terrible.
M: have an upset stomach
F: You must have had an upset stomach.
M: have too much food
F: You must have had too much food.
M: eat something bad
F: You must have eaten something bad.
M: eat too fast
F: You must have eaten too fast.
