給三年級(jí)小學(xué)生整理的【三篇】英語(yǔ)語(yǔ)法知識(shí)點(diǎn)

字號(hào):

正確的語(yǔ)法可以簡(jiǎn)化信息,簡(jiǎn)單的一句話就能傳達(dá)很多信息,甚至包含多重意思,就像雙關(guān)語(yǔ)一樣。語(yǔ)法正確還能避免歧義,明確指代關(guān)系和修飾對(duì)象等,是很有用的,學(xué)進(jìn)去了就明白了。以下是整理的相關(guān)資料,希望對(duì)您有所幫助!
     【篇一】
    肯定句:動(dòng)詞原型
    Come here, please.
    Go downstairs, please.
    Stand up.
    Sit down.
    Be quiet.
    Be careful.
    祈使句中如果有喚語(yǔ),一定要用逗號(hào)隔開(kāi),放在句首或者句尾:
    Come in, Amy.
    Sit down here, Tom.
    Mary, give me a book please.
    ★否定:Don't+動(dòng)詞原型
    Don't come here.
    Don't sit down.
    Don't stand up.
    Don't give me it.
    let sb. do 讓某人做
    Let me pass.
    Let us have a rest.
    Let's have a rest.
    反意疑問(wèn):
    Let's have a walk along the river, shall we?
    Let us go out for a drink, will you?
     【篇二】
    英語(yǔ)名詞復(fù)數(shù)規(guī)則
    1.一般情況下,直接加-s,如:book-books, bag-bags, cat-cats, bed-beds
    2.以s。 x。 sh。 ch結(jié)尾,加-es,如:bus-buses, box-boxes, brush-brushes, watch-watches
    3.以“輔音字母 y”結(jié)尾,變y為i, 再加-es,如:family-families, strawberry-strawberries
    4.以“f或fe”結(jié)尾,變f或fe為v, 再加-es,如:knife-knives 〕
    Leaf--leaves
    5.不規(guī)則名詞復(fù)數(shù):
    man-men, woman-women, policeman-policemen, policewoman-policewomen,
    child-children
    foot-feet,。tooth-teeth
    fish-fish, people-people, Chinese-Chinese, Japanese-Japanese
     【篇三】
    引導(dǎo)條件狀語(yǔ)從句的從屬連詞
    主要的有if, unless, as [so] long as等:
    You can leave now if you like. 如果你愿意現(xiàn)在就可以走了。
    As long as it doesn’t rain we can go. 只要不下雨,我們就可以去。
    【注】除以上基本的引導(dǎo)條件狀語(yǔ)從句的從屬連詞外,還有的動(dòng)詞尤其是其分詞形式(如suppose, supposing, provided, providing等)和介詞短語(yǔ)(如in case, on condition that等)也可用作連詞表示條件:
    In case I forget, please remind me about it. 萬(wàn)一我忘記,請(qǐng)?zhí)嵝盐乙幌隆?BR>    I will come on condition (that) she is invited too. 如果邀請(qǐng)她來(lái), 那我就來(lái)。
    He may go with us provided [providing] he arrives in time. 他若及時(shí)到,就可以和我們一起走。
    Suppose 和supposing 引導(dǎo)條件狀語(yǔ)從句時(shí),通常用于主句為疑問(wèn)句的場(chǎng)合:
    Suppose the boss saw you,what would he say? 如果老板看到你,他會(huì)怎樣說(shuō)?
    Supposing he does not come, shall we go without him? 他若不來(lái),是不是不帶他去?
    條件狀語(yǔ)從句的時(shí)態(tài)
    當(dāng)主句為將來(lái)時(shí)態(tài)或具有將來(lái)意時(shí),條件狀語(yǔ)從句通常要用一般現(xiàn)在時(shí)表示將來(lái)意義,而不能直接使用將來(lái)時(shí)態(tài):
    I’ll stay at home if it rains tomorrow. 要是明天下雨,我就呆在家里。
    【注】有時(shí)也可見(jiàn)到 if you will 這樣的說(shuō)法,但那不是將來(lái)時(shí)態(tài),而是表示意愿或委婉的請(qǐng)求(此處的 will是情態(tài)動(dòng)詞):
    If you will wait for a moment, I’ll go and tell the manager that you are here. 請(qǐng)等一下,我去告訴經(jīng)理說(shuō)你來(lái)了。