1、时间名词前所用介词的速记歌年月周前要用 in,日子前面却不行。遇到几号要用 on,上午下午又是 in。要说某日上下午,用 on 换 in 才能行。午夜黄昏须用 at,黎明用它也不错。 at 也用在明分前,说“差”可要用上 to, 说“过”只可使用 past,多说多练牢牢记, 莫让岁月空蹉跎。 下面就时间概念的介词用法做一简要介绍和比较。1. at 表示时间概念的某一个点。(在某时刻、时间、阶段等)。at 1:00(dawn,midnight,noon)在一点钟(黎明、午夜、中午) these are our chief tasks at the present stage这些就是我们现阶段的主
2、要任务。2. on 1)表示具体日期。they arrived in shanghai on may 25他们在五月二十五日到达上海。注:(1)关于在周末的几种表示法:at(on)the weekend在周末-特指at(on)weekends在周末-泛指over the weekend在整个周末during the weekend在周末期间(2)在圣诞节,应说at Christmas而不说on Christmas 2)在(刚)的时候。on reaching the city he called up his parents一到城里他就给父母打了一个电话。3. in 1)表示时段、时期,在多数情
3、况下可以和 dur- ing 互换,前者强调对比,后者强调持续。in (during)1988(December,the 20th century)在一九八八年(十二月、二十世纪)i returned to Beijing in the middle of June我是六月中回北京的。但如果表示在某项活动的期间,则只能用 during。during my military service(the trip)在我服役期间(在旅行期间) 2)表示以说话时间为基点的(若干时间)以后,常用作将来时态谓语的时间状语。如这时要表示(若干时间)内,常用 within。比较:the meeting will
4、end in 30minutes(三十分钟后)会议三十分钟后结束。can you finish it within 30minutes?(三十分钟内)你能在三十分钟之内完成这件事吗?但在过去时态中,in 可用于表在若干时间以内,这时不要误用 during。the job was done during a week(wrong)the job was done in a week(right)这工作在一星期内就完成了。4. after 表示在(某具体时间)以后,注意不要和 in 的 2)意混淆。after supper(8oclock,the war)晚饭(八点、战)后 比较:he will
5、be back in two hours他将在两个小时以后回来。he returned tohis hometown after the war战后他回到了故乡。5 for 表示(动作延续)若干时间,有时可省略。i stayed in london(for)two days on my way to new york在去纽约的途中,我在伦敦呆了两天。6. since 表示自(某具体时间)以来,常用作完成时态谓语的时间状语。since liberation(1980)自从解放(1980 年)以来they have been close friends since childhood他们从小就是好
6、朋友。 注:(1)since the war 是指自从战争结束以来,若指自从战争开始以来, 须说since the beginning of the war。(2)不要将 since 与 after 混淆。比较:he has worked here since 1965(指一段时间,强调时间段)自从 1965 年以来,他一直在这儿工作。he began to work here after 1965(指一点时间,强调时间点)从 1965 年以后,他开始在这儿工作。7. by 表示到的时候,其谓语时态的用法:动作动词常用完成时态; 状态动词(be)常用一般时态。比较:by noon,everyb
7、ody had(will have)arrived thereby noon,everybody were(will be)there 到中午的时候,大家都(将)到那儿了。 以上探讨了介词表示时间概念时的用法和比较,上述介词除表示时间概念外还有其他的用 法,英语学习者必须掌握其各种用法,才能灵活运用,提高自己的语言能力。 小学英语语法复习要点(一) 一、名词复数规则1一般情况下,直接加-s,如:book-books, bag-bags, cat-cats, bed-beds 2以 s. x. sh. ch 结尾,加-es,如:bus-buses, box-boxes, brush-brushe
8、s, watch-watches 3. 以“辅音字母+y”结尾,变 y 为 i, 再加-es,如:family-families, strawberry-strawberries 4. 以“f 或 fe”结尾,变 f 或 fe 为 v, 再加-es,如:knife-knives 5不规则名词复数:man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice child-children foot-feet,.tooth-teeth fish-fish, people-people, Chinese-
9、Chinese, Japanese-Japanese 写出下列各词的复数 I him this her watch child photo diary day foot book dress tooth sheep box strawberry thief yo-yo peach sandwich man woman paper juice water milk rice tea 二、一般现在时一般现在时基本用法介绍 【No. 1】一般现在时的功能1. 表示事物或人物的特征、状态。如:The sky is blue.天空是蓝色的。2. 表示经常性或习惯性的动作。如:I get up at si
10、x every day.我每天六点起床。3. 表示客观现实。如:The earth goes around the sun.地球绕着太阳转。一般现在时的构成1. be 动词:主语+be(am,is,are)+ 其它。如:I am a boy. 我是一个男孩。2. 行为动词:主语+行为动词(+其它)。如: We study English.我们学习英语。当主语为第三人称单数(he, she,it)时,要在动词后加-s或-es。如:Mary likes Chinese.玛丽喜欢汉语。一般现在时的变化1. be 动词的变化。否定句:主语+ be + not +其它。如:He is not a wor
11、ker.他不是工人。一般疑问句:Be +主语+其它。如:-Are you a student? -Yes. I am. / No, Im not. 特殊疑问句:疑问词+一般疑问句。如:Where is my bike? 2. 行为动词的变化。否定句:主语+ dont( doesnt ) +动词原形(+其它)。如:I dont like bread. 当主语为第三人称单数时,要用 doesnt 构成否定句。如:He doesnt often play. 一般疑问句:Do( Does ) +主语+动词原形+其它。如:- Do you often play football? - Yes, I do
12、. / No, I dont. 当主语为第三人称单数时,要用 does 构成一般疑问句。如:- Does she go to work by bike? - Yes, she does. / No, she doesnt. 特殊疑问句:疑问词+一般疑问句。如:How does your father go to work? 动词+s 的变化规则1. 一般情况下,直接加-s,如:cook-cooks, milk-milks 2. 以 s. x. sh. ch. o 结尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes 3. 以“
13、辅音字母+y”结尾,变 y 为 i, 再加-es,如:study-studies 一般现在时用法专练: 一、 写出下列动词的第三人称单数 drink go stay make look have pass carry come watch plant fly study brush do teach 二、用括号内动词的适当形式填空。1. He often 2. Daniel and Tommy (have) dinner at home. (be) in Class One. 3. We (not watch) TV on Monday. 4. Nick (not go) to the zoo
14、 on Sunday. 5. they (like) the World Cup? 6. What they often (do) on Saturdays? 7. your parents (read) newspapers every day? 8. The girl (teach) us English on Sundays. 9. She and I (take) a walk together every evening. 10. There (be) some water in the bottle. 11. Mike (like) cooking. 12. They (have)
15、 the same hobby. 13. My aunt (look) after her baby carefully. 14. You always (do) your homework well. 15. I (be) ill. Im staying in bed.16. She (go) to school from Monday to Friday. 17. Liu Tao (do) not like PE. 18. The child often (watch) TV in the evening. 19. Su Hai and Su Yang (have) eight lessons this term. 20. What day (be) it today? Its Saturday.三、按照要求改写句子1. Daniel watche
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