【正文】
動詞————且有——————和——— 的變化。八: 區(qū)別 A. can’t may not mustn’t needn’t don’t have to B:1. needn’t do / needn’t have doneA: After school ,I have to clean the classroom. B: You did it an hour ago. A: Yesterday He went to the station by taxi,B: He ____________. It is not farfrom here.2. should do / should have done This time you have got the first ____________ more harder later.You failed in the exam. You _____________before.3. couldn’t couldn’t have done I ____________ e here tomorrow. There were 80 people in the bus. It __________________ fortable.3用心 愛心 專心