用方框中短语的正确形式填空.be based on,dressup,begoodat, havedifficultyin, belong to, playaroleof,die from 1. In big cities during cold winter months, many old-九年级英语

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yi,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.

  • 一般现在时的基本结构:


    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:
      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?
      记忆口诀:
      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:

      构成

      举例

      一般情况

      词尾+ed

      动词原形

      过去式和过去分词

      look
      talk

      looked
      talked

      以不发音字母e结尾

      词尾+d

      like
      arrive

      liked
      arrived

      以“辅以字母+y”结尾

      变y为i,再加ed

      fly
      study

      flied
      studied

      以重读闭音节结尾,且末尾只有一个辅音字母

      双写词尾+ed

      stop
      plan

      stopped
      planned 


      结构句型:

      1.一般句子
      I watched TV last night.
      2.一般疑问句
      Did you watch TV last night?
      3.there be 句型
      There was an apple on the table last night.
      Was there an apple on the table last night

    • 一般过去时注意事项:
      1.注意主句与从句中时态的一致性
      如果主句用了过去时,从句中一般也要用过去式,或者过去进行时、过去完成时等。例如:
      He believed that he was right. 他相信自己是对的。
      I didn’t know you were here. 我不知道你在这儿。
      I thought they were with you. 我以为他们和你在一起。

      2.在口语中, 一般过去时并不一定指真正的过去,而只是表示一种礼貌性语气。例如:
      I wondered (wonder) if you could do me a favor. 不知你可否帮我一个忙。
      I wanted (want) to ask if I could borrow your car. 我想问问可否借用你的车。
      I hoped (hope) you could (can) give me some advice. 我希望你能帮我出点主意。
      Did (Do) you want to see me? 你想见我吗?

      3.used to
      used to 是一个词组,表示“过去曾经是……而现在已经停止了”的动作。例如:
      I used to work fourteen hours a day. 我过去常常一天干十四个小时。(而现在不这样了)
      I used to take a walk in the morning.我过去是在早晨散步。(而现在不在早晨散步了)

    • 一般过去式用法:
      (1)一般过去时表示在过去某个特定时间发生,也可以表示过去习惯性、经常性的动作。
      一般过去时不强调动作对现在的影响,只说明过去的事情。
      句式:主语+动词过去式+宾语+其它
      I had a word with Julia this morning.今天早晨,我跟茱莉雅说了几句话。
      He smoked many cigarettes a day until he gave up. 他没有戒烟的那阵子,抽烟抽得可凶了。

      (2) 一般过去时常与表示过去的时间状语或从句连用,如:
      yesterday,last week ,in  the  past ,in 1993,at that time,once,during the war,before,a few days ago,when 等等.
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