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2021年中考英语知识点:一般现在时的句型结构


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    一般现在时的句型结构:
    1,肯定句
    I/You / We/ They/复数名词 +动词原形
    She/ He/ It/ 单数名词/ 不可数名词/ 动词不定式to do/ 动名词doing +动词第三人称单数
    I want to go to the movies tonight.
    我今晚想去看电影。
    They alwaysgo to school by bike when it's sunny.
    天气晴朗时他们总是骑自行车上学。
    Crabs havesurprisingly good memories and can remember their wayaround mazes, research reveals.
    研究显示,螃蟹有着惊人的好记性,它们能记住迷宫里的路线。
    She hasher breakfast at eight and sets off to work at eight thirty.
    她八点吃早饭,八点半动身上班。
    It doesno good to you to relieve the stress by drinking.
    喝酒来减压对你没有好处。
    (it是形式主语,to do是真正主语)
    Seeing isbelieving.
    眼见为实。
    Heoften goes to the library and reads books.
    注意:动词第三人称单数的变化规则:
    1)多数动词的第三人称单数形式加“s”:
    want - wants live -lives 2)以“-ss, -sh, -ch, -x, -o”结尾的动词加 “es” :
    pass - passes wash - washes relax - relaxes go - goes 3) 辅音字母加y结尾的单词,改y为i加“es”:
    carry - carries study - studies
    4)不规则变化:
    have-has
    2,否定句
    系动词+not;
    情态动词+not +动词原形;
    助动词do/does+not+动词原形。
    He is not/isn'thappy about the exam result.
    他对考试结果不满意。
    It can not/can't/cannot behim. He has been away for two weeks.
    不可能是他。他已经离开两个星期了。
    They do mot/don't goto bed before ten o'clock on weekends.
    他们周末十点以前不睡觉。
    It does not/doesn't matterwhether you go or not.
     (责任编辑:admin)