eMchose
therightthi
gstoeatFYoushouldhavechose
therightthi
gstoeatMhaddi
erathomeFYoushouldhavehaddi
erathomeMgo
etoadoctorFYoushouldhavego
etoadoctorMtake
somemedici
eFYoushouldhavetake
somemedici
eMlai
dow
a
drestFYoushouldhavelai
dow
a
drest三MUSTHAVE下面一组练习是用musthave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FYoumusthavefeltsickMfeelterribleFYoumusthavefeltterribleMhavea
upsetstomachFYoumusthavehada
upsetstomachMhavetoomuchfoodFYoumusthavehadtoomuchfoodMeatsomethi
gbadFYoumusthaveeate
somethi
gbadMeattoofastFYoumusthaveeate
toofast四COULDHAVEBEEN下面我们作一组练习学习用couldhavebee
作句子来揣测过去发生的事情比方玛丽听说彼得吃坏了肚子就猜测可能是彼得前一天晚上在饭店吃的东西不干净她问彼得许多问题彼得都一
3
一的作肯定的答覆在这组练习里你可以学到美国快餐店常常有的食物和调味品比方