新概念一册Lesson_83、84语法.ppt [自动保存的].ppt

It’s 5 o’clock. He had a piece of pizza. He is full. It’s 5:30. Would you like a burger? No, thank you. I have (already) had dinner. I had dinner at 5 o’clock. Would you like some juice? No, thank you. I have (just) had some. They had some ice-creams. Would you like some ice-creams? No, thanks. I’ve had an ice-cream. I had an ice-cream at four o’clock. I have had dinner. I have had some juice. I have had an ice-cream. I have had… Grammar focus NCE 谈论过去发生的事情，但是发生的时间不重要 2. 谈论过去发生的某事，但对现在造成了影响 3. 过去开始的某事，现在还在继续 也就是 “站到现在说过去” 现在完成时 构成： S（主语） + have/ has+ 动词过去分词+其他 注意：这里的have是助动词,无意义 have-had-had 注意主语和助动词的缩写形式： 规则动词过去分词和过去式变法一样 + ed clean --- cleaned + d arrive --- arrived 3. 辅音字母+y结尾的 把y 变i + ed empty --- emptied 动词的过去分词的规则变化 动词的过去分词的规则变化，在动词后加ed，规则变化有以下四种： ①原形+ed? 如：worked,?passed? ②词尾是e时，直接加d? 如：liked??lived③若词尾为“辅音字母加y”，则改y为i加ed。词尾 为“元音字母+y”时，直接加d；如 played??stayed??studied??cried? ④末尾只有一个辅音字母的重读闭音节是，双写最后一个辅音字母加ed. 如：?stopped?dropped 不规则动词的过去式以及过去分词巧记规律 AAA: put– put –put let—let –let ABA: become—became—become ABB: stand—stood—stood ABC: eat— ate—eaten 注意现在完成时中的时间副词 already adv. 已经 just adv. 刚刚 1) 注意副词在句子中的位置。 行为动词之前，助动词和be动词之后。 He has already finished his work. 2) 在否定句和疑问句中, already要变yet, 并且 yet只能在句末。 He hasn’t finished his work yet. Has he finished his work yet? ---Not yet. 3) already 和yet出现要用完成时态。 He has already had lunch. (否定句) (一般疑问句) (回答) 现在完成时句式转换 He hasn’t had lunch yet.（助动词后+not） Has he had lunch yet? （助动词提句首） Yes, he has./ No, he hasn’t. I have already had lunch. I had lunch at half past twelve. I’ve just had a cup. I had one after my lunch. 时间词不同：注意时态的标志词。 意义不同：完成时强调动作对现在的影响，而过去时只陈述过去的事实。 区别现在完成时和过去时态 体验运用现在完成时态 fruit bananas oranges apples peaches A: Have a banana, please. B: No, thank you. I have already had one. lamb chicken beef steak A: Would y