初中英语八种时态讲解讲课教案
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什么情况下用?
①表示经常或习惯性的动作或存 在的状态。②表示主语通常的能 力、兴趣爱好、和性格特征。③ 表示客观的事实或真理。④表示 按照时刻表或已经计划安排好的 将来行为。(只限于是go, come, leave, arrive, begin, start, take off, stop, be等表示开始或移动意义的 词。)⑤在时间状语从句和条件 状语从句中,主句用一般将来时 (will+动词原形),从句中用一般
谓语动词使用过去式形式, 加ed,分为规则和不规则变 化。表示过去经常发生的动 作,也可用“used to do ” 和“would +动词原形”。
构成规则
例子
一般在动词原形末尾加-ed,(在清 look→looked
辅音后读/t/;在浊辅音和元音后读 play→played
/d/;在/t/,/d/后读/id/。
以辅音字母加y结尾的词 ,先变y为i, 再加-es,读/z/
例子
Play→plays leave→leaves swim→swims
pass →passes fix→fixes teach→teaches wish→wishes do→does
study→studies carry→carries fly→flies
work→worked
结尾是e的动词在末尾加-d
百度文库
like→liked live→lived hope→hoped
末尾只有一个辅音字母的重读闭音 plan→planned 节,先双写这个辅音字母,再加-ed stop→stopped
drop→dropped
结尾是“辅音字母+y”的动词,先 study→studied
语法专题(一)
时态
一般现在时 一般过去时 现在进行时 过去进行时 现在完成时 过去完成时 一般将来时 过去将来时
一般现在时
一、一般现在时:
概念:经常、反复发生的动作或行为及现 在的某种状况。 时间状语: always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, etc. 基本结构:①be动词;②行为动词 否定形式:①am/is/are+not;②此时态的谓 语动词若为行为动词,则在其前加don't,如 主语为第三人称单数,则用doesn't,同时 还原行为动词。 一般疑问句:①把be动词放于句首;②用 助动词do提问,如主语为第三人称单数, 则用does,同时,还原行为动词。
变“y”为“i”再加-ed
worry→worried
cry→cried
1. He____(be, was, were, been) here a moment ago. 2. They ____(be, was, were, been) here just now. 3. The scientists _____(leave, leaves, leaved, left) for America yesterday. 4. Last week we ______(visit, visited ) the Science Museum. 5. When I was a child, I often ____(play, played) football. 6. The students ran out of the classroom as soon as the bell ____(ring, rang, rung).
1. He______(be, am, is, are) a teacher at No. 2 Middle School. 2. He______(have, has) classes in the afternoon. 3. He______(get, gets) up at half past six every morning. 4. He always _____(come, comes ) to school on time. 5. He ______(study, studies) very hard at his lesson. 6. One and two _____(be, is, are) three. 7. Blue and yellow _____(make, makes) green. 8. The earth _____(move, moves) round the sun. 9. I will go there if I ____( be, will be, am, is, are) free tomorrow.
现在时表将来。(主将从现)
当主语是第三人称 时,谓语动词要用 第三人称单数形式, 加-s/es。除此之外 都用动词原形。
动词第三人称单数 形式变化规则
规则 一般在词尾加-s,(清辅音后 读/s/,在浊辅音后读/z/; 在t后读/ts/,在d后读/dz/。)
以字母s, x, ch, sh, o结尾的词 加-es,读/iz/,如果动词原形 词尾已有e,则只加-s。
一般过去时
概念:过去某个时间里发生的动作或 状态;过去习惯性、经常性的动作、 行为。 时间状语:ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc. 基本结构:①be动词;②行为动词 否定形式:①was/were+not;②在行为 动词前加didn't,同时还原行为动词。 一般疑问句:①was或were放于句首; ②用助动词do的过去式did 提问,同时 还原行为动词。
10. I will go there when I _____(have, will have, has) time tomorrow. 11. He won’t come to the party unless he _____(be, will be, am, is, are) invited. 12. I’ll wait here until my mother ____(come, comes, will come) back. 13. Please return the book to the library as soon as you ______(finish, finishes, will finish) reading it. 14. Once you _____(see, sees, will see) him, you will never forget him.