初中英語(yǔ)知識(shí)點(diǎn)總結(jié)歸納

字號(hào):

. 一般現(xiàn)在時(shí)的用法
    1) 經(jīng)常性或習(xí)慣性的動(dòng)作,常與表示頻腮度的時(shí)間狀語(yǔ)連用.
    時(shí)間狀語(yǔ): every…, sometimes, at…, on Sunday
    I leave home for school at 7 every morning.
    2) 客觀真理,客觀存在,科學(xué)事實(shí).
    The earth moves around the sun.
    Shanghai lies in the east of China.
    3) 表示格言或警句中.
    Pride goes before a fall. 驕者必?cái)?
    注意:此用法如果出現(xiàn)在賓語(yǔ)從句中,即使主句是過(guò)去時(shí),從句謂語(yǔ)也要用一般現(xiàn)在時(shí).
    例:Columbus proved that the earth is round..
    4) 現(xiàn)在時(shí)刻的狀態(tài)、能力、性格、個(gè)性.
    I don’t want so much.
    Ann Wang writes good English but does not speak well.
    比較:Now I put the sugar in the cup.
    I am doing my homework now.
    第一句用一般現(xiàn)在時(shí),用于操作演示或指導(dǎo)說(shuō)明的示范性動(dòng)作,表示言行的瞬間動(dòng)作.再如:Now watch me, I switch on the current and stand back. 第二句中的now是進(jìn)行時(shí)的標(biāo)志,表示正在進(jìn)行的動(dòng)作的客觀狀況,所以后句用一般現(xiàn)在時(shí).
    2. 一般過(guò)去時(shí)的用法
    1)在確定的過(guò)去時(shí)間里所發(fā)生的動(dòng)作或存在的狀態(tài).
    時(shí)間狀語(yǔ)有:yesterday, last week, an hour ago, the other day, in 1982等.
    Where did you go just now?
    2)表示在過(guò)去一段時(shí)間內(nèi),經(jīng)常性或習(xí)慣性的動(dòng)作.
    When I was a child, I often played football in the street.
    Whenever the Browns went during their visit, they were given a warm welcome.
    3)句型:
    It is time for sb. to do sth "到……時(shí)間了" "該……了"
    It is time sb. did sth. "時(shí)間已遲了" "早該……了"
    It is time for you to go to bed. 你該睡覺(jué)了.
    It is time you went to bed. 你早該睡覺(jué)了.
    would (had) rather sb. did sth. 表示’寧愿某人做某事’
    I’d rather you came tomorrow.
    4) wish, wonder, think, hope 等用過(guò)去時(shí),作試探性的詢問(wèn)、請(qǐng)求、建議等.
    I thought you might have some. 我以為你想要一些.