开放英语258256.pptVIP

开放英语2 Unit19---23 Unit 19 1.Not…..until……表示“直到……才…..” eg: They didn’t turn up until 9:00 last night. 2.a mess/to be in a mess,指“杂乱,乱七八糟的样子” eg: This room is a real mess! My hair is a real mess. What happened to you? You look a mess. My room’s in a mess. 规则动词的过去式 一般过去式用来表示过去发生的动作或存在的状态. 1.一般过去式的否定式,do not---did not/didn’t , is not---was not , are not—were not eg: I did not (didn’t) like swimming when I was a child. He was not (wasn’t) late. They were not (weren’t) at home yesterday. 2.情态动词can的过去式是could,否定式是could not (couldn’t) eg: She could not (couldn’t )come to the party. 3.当have表示“有”时,过去式是had,否定式是had not (hadn’t).当不表示“有”时,其否定式是did not (didn’t) have eg: We hadn’t books before. They didn’t have a good time. 4.一般过去式疑问句与简略回答 Did you go swimming yesterday? Yes ,I did. Did she watch television last night? No, she didn’t. Was Polly at the party? Yes, she was. Were they in the restaurant? No, they weren’t. 5.一般过去时的特殊疑问句 特殊疑问句常常以疑问词(who, what, where, why, when, how)开头. eg: where did you go ? Who did you see there? What did you do ? When were you in the pub? 6.不规则动词的过去式 1.时间短语 一般过去时的句子常常带有表示过去时间概念的短语,如:yesterday, last month等 eg: We cleared up this morning. Did you have a good time last night? 2.anyone ,someone, no one (anybody, somebody, nobody)在肯定句中一般用someone/somebody和no one/nobody,在否定句中和疑问句中一般用anyone/anybody. eg: He didn’t talk to anyone else. I talked to someone .He didn’t talk to anyone. He talked to no one else the whole evening. 3.形容词修饰anything, something, nothing等不定代词时应放在其后面 eg: I don’t want to watch anything sad. I like something exciting like an adventure film. Unit 20 连词although, but, because的用法 Although表示“虽然…..,但是…..”既可放在句首,也可放在句后.But表示语气的转折. eg: Although the plot is weak ,the action is really fantastic. Although the action is really fantastic ,the plot is weak. The action is really fantastic ,although the plot is weak. It is very