用所给动词的适当形式填空。1. — I _____ (buy)a beautiful pen. — When _____ you____ (buy) it?2. He_____(not post) the letter for me. It is still on his desk.-八年级英语
以-ch, -sh, s, x, o结尾
词尾+es
teach(教)
wash(洗)
dress(装扮)
fix(安装)
go(去)
teaches
washes
dresses
fixes
goes
以“辅音字母+y”结尾
变y为i，再加es
fly(飞翔)
try(尝试)
flies
tries
特殊变化的词：
be （是） - am,is,are
I am
she/he/it，名词单数都用 is
we,you,they，名词复数都用are
have （有） - have,has
I,we,you,they，名词复数都用have
she/he/it is，名词单数都用 has
助动词，不论单复数、不论什么人称都没有变化，都用 can,may,must,need,ought to 等。
而且，句子中有了助动词，谓语动词就不需要有任何变化了，即用动词原形表示。例：
We have six classes every day. 我们每天上六节课。
I often get up at 6:30. 我经常6:30起床。
Jack likes Chinese food very much.杰克很喜欢中国饮食。
We can see some pictures on the wall. 我们能看到墙上的画。
4.一般现在时常用的时间词语
常用于一般现在时的词语有 sometimes/usually/often/every day(week,year)/ now/always 等。
这些时间词语只是辅助作用，这些词语也可用于其它的时态，所以谓语动词变化才是最关键的。
注意：当表现强烈的感情色彩时，尽管有如 always/never/seldom 等频率副词，但一般在频率副词前加上be动词，后面变为动词的现在分词形式。
例：My father lose his key again. He is always losing his key.
一般现在时中当主语为第三人称单数的时，动词上要改为第三人称单数形式。
考点名称：一般过去时
- 一般过去时:
表示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；过去主语所具备的能力和性格。
基本结构：
主语+动词过去式+其他；
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Did+主语+do+其他。 - 一般过去时句法结构：
肯定形式
主语+动词过去式+其他
例句：She often came to help us in those days.
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
例句：I didn't know you like coffee
一般疑问句
①Did+主语+do+其他？ ②Was\Were+主语+表语?
例句：Did I do that?
用表格整理如下：
记忆口诀：肯定式 疑问式 否定式 疑问否定式 Iworked Did I work? I did not work Did I not work? He(She,It) worked Did he(she,it) work? He(she,it) did not work Did he(she,it) notwork? We worked Did we work? We did not work Did we not work? You worked Did you work? You did not work Did you not work? They worked Did they work? They did not work Did they not work?
一般过去时并不难，过去动作、状态记心间。
动词要用过去式，时间状语句末站。
否定句很简单，didn't 站在动原前，其它部分不要变。
一般疑问句也好变，did放在句子前，主语、动原、其它部分依次站。
特殊疑问句也简单，疑问词加一般疑问句记心间。
最后一条请注意，动词过去式要牢记！
一般过去时中动词过去式变化规则：
![—How can you start playing games so soon, Tom? —Imy homework, Mum. [ ]A. has finished B. finish C. finished D. have finished-九年级英语](http://www.00-edu.com/d/file/ks/4/2/xianzaiwanchengshi/2020-01-10/small5d409fc2adfdd38c561d7e57344c34401578591472.png)
![They__________ all their money, so they have to walk home. [ ]A. spendB. had spentC. have spentD. will spend-九年级英语](http://www.00-edu.com/d/file/ks/4/2/xianzaiwanchengshi/2020-01-10/small32006684e8d67f57bcbc732818ded2971578590317.png)
![Norman Bethune ________ for over 60 years.[ ]A. has died B. died C. has been dead D. was died-九年级英语](http://www.00-edu.com/d/file/ks/4/2/xianzaiwanchengshi/2020-01-10/smalle3c066781708795fc1e951de8b8612971578591197.png)
![Tom misses his father very much because his father _____ Japan for two years. [ ]A. has gone to B. has been to C. has been in D. went to -九年级英语](http://www.00-edu.com/d/file/ks/4/2/xianzaiwanchengshi/2020-01-10/smalleb8fa750cde3650060828d14c3ba4f341578587972.png)
![—Do you know Bill well? —Yes. We _______ friends since primary school. [ ]A. have turned B. have made C. became D. have been -九年级英语](http://www.00-edu.com/d/file/ks/4/2/xianzaiwanchengshi/2020-01-10/small2474cec8e066eed088fc60bd3c95fa161578589235.gif)
