Unit 4 I used to be afraid of the dark.一、Knowledge summary1. used to +V(原形) 过去做……（只用过去时）eg. I used to be short.Tina used to have red and curly hair.Did he use to wear glasses? Yes, he did. / No, he didn’t .be used to do sth. 被用来做某事be / get used to doing sth. 习惯做某事反意疑问句 （反义疑问句遵循这样一个原则，前肯定后否定，前否定后肯定） ①肯定述句+否定提问 如：Lily is a student, isn't she?②否定述句+肯定提问 如：She doesn't come from China, does she?③提问部分用代词而不用名词 如：Lily is a student, isn't she?④述句中含有否定意义的词， 如：little, few, never, nothing, hardly等，其反意疑问句用肯定式 如：He knows little English, does he? 他一点也不懂英语，不是吗？They hardly understood it, did they? 他们几乎不明白，不是吗？口诀：反义问句要点三，前后谓语正相反。 附加问句not现，必须缩写是习惯。 最后一点应注意，问句主语代词换。 回答反义疑问句，答案含义是依据， 肯定事实用yes，否定事实用no替。2.辨析：①What is she like?She is quiet and a little shy.②What does he look like? He has short hair. 3.helpful adj.有用的，有帮助的be helpful to sb.对某人有帮助4. ①adj./adv.+ enough to do sth.Eg. He is old enough to join the army.②enough + n. Eg. He has enough money to buy these books.③so…that , enough to …,与 too…to 同义句转换Tom is so clever that he can work out the math problem.=Tom is clever enoug |
