牛津上海版小学英语时态总结.doc
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牛津上海版小学英语时态总结一般过去时标志：1介词+过去的时间的年月日，in19982 yesterday昨天，以及yesterday的短语yesterday morning, the day before yesterday前天3. 带有ago的短语，ago表示之前，two weeks ago两周前4. 带有last的短语，last表示上一个，如last year去年5. 表示过去的短语 just now刚刚，once曾经，at that time那个时候表示过去发生的动作或出现的状态，用动词的过去式来表达，如：I was at the library yesterday afternoon.Tom studied hard and did well in the final exam last year.2）、动词的过去式分为规则动词和不规则动词两种： 规则动词的过去式： ① 一般情况下在动词原形后直接加-ed wanted，played ② 以不发音的字母e结尾的动词，直接加-d hoped，lived③ 重读闭音节单词如果末尾只有一个辅音字母需双写最后一个辅音字母，再加-ed stopped （同双写加ing的那些词） ④ 以辅音字母+y结尾的动词变y为i，再加-ed。
studied，worried 以元音字母+y结尾的动词，直接加-ed. played, enjoyed规则动词过去式的读音也有规律可循请记住：清后[t]，元浊[d]，[t] [d]之后读[id]① 清辅音后，ed要读[t]worked，finished② 元音或浊辅音后，ed要读 [d]lived，called③ [t]或[d]后，ed读[id] started，needed不规则动词有其自己的变化形式，只能分别记忆1. go －went 2.has/ have－had 3.sit－sat 4.eat－ate 5.see－saw 6 put－put e－came 8.read－read －di3）句式及其变化： a. be动词过去式的句式： 否定句是在was/were后面加not，was not (wasn't)/were not (weren't) 一般疑问句是把was / were提前并放到句首，要求首字母要大写b. 实义动词过去式的句式： ①肯定式：主语+动词过去式+其它。
如：They had a good time yesterday. ②否定式：主语+did not(didn't)+动词原形+其它 如：They didn't watch TV last night. ③一般疑问句：Did+主语+动词原形+其它？ 肯定回答：Yes，主语+did. 否定回答：No，主语+didn't. 如：Did they have a meeting two days ago? Yes，they did. / No，they didn't. ④特殊疑问句：特殊疑问词+did+主语+动词原形+其它？ 如：What time did you finish your homework?现在进行时标志：Now, look! Listen! It’s 10 o’clock, at the moment此刻，right now现在动词用be+doing的形式(I am doing, he/she/it is doing, we/you/they are doing)1. be+doing直接加ingLook, the girls are singing happily.2. 末尾是e的动词，去e加ingNow, the girls are dancing happily3. 部分中读闭音节单词双写末尾字母加ingLook, the girls are swimming happily.一般现在时标志：以下时间状语联用： always总是, usually通常, often经常, sometimes有时候, every week每周 (day, year, month…), once a week一周一次, on Sundays在周日的时候 …… I, we, you, they后面动词不变，He, she, it, 及单数名词（Kitty, my teacher, your friend）出现时，一般的动词词尾+S。
以sh/ch/s/x结尾的词+es.以辅音字母Y结尾的把Y变成i再+es辅音字母+o结尾的+es.He always lives there.The girl washes her face every morning.He often studies in the bedroom .。
