2020屆高考英語(yǔ)語(yǔ)法專(zhuān)題復(fù)習(xí) 語(yǔ)法剖析---三種時(shí)態(tài)
語(yǔ)法剖析---三種時(shí)態(tài)一般現(xiàn)在時(shí)謂語(yǔ)形式(1)謂語(yǔ)是系動(dòng)詞be。(2)謂語(yǔ)是行為動(dòng)詞。一般現(xiàn)在時(shí)句中，如果主語(yǔ)是第三人稱(chēng)時(shí)，動(dòng)詞要進(jìn)行變化：①一般情況下，動(dòng)詞后面直接加-s。例如：works,gets,says,reads②以ch,sh,s,x或o結(jié)尾的動(dòng)詞，在后面加-es。例如：goes,teaches,wases③以輔音字母+y結(jié)尾的動(dòng)詞，把y變?yōu)閕再加-es。例如：studies,tries,carries用法
用法
例句表示經(jīng)常性、習(xí)慣性的動(dòng)作及現(xiàn)在存在的特征或狀態(tài)；常與表示頻度的時(shí)間狀語(yǔ)連用。she is often late for school. i leave home for school at 7 every morning.表示客觀規(guī)律、正確事實(shí)或科學(xué)真理、格言及客觀存在。the earth moves around the sun.failure is the mother of success.all the living things on the earth depend on the sun.表示主語(yǔ)現(xiàn)在的狀態(tài)、能力、性格或個(gè)性。the boy is always ready to help others.he writes good english but does not speak well.表示計(jì)劃或安排要做的動(dòng)作（有時(shí)間狀語(yǔ)）,限于begin,come,leave,go,arrive,start,move,stop,open,close,return等一類(lèi)動(dòng)詞。the plane takes off at ten o’clock.they leave for shanghai next sunday.the film starts at eight o’clock this evening.在有連詞if,unless,before,when,as soon as,once,however等引起的時(shí)間（條件、讓步）狀語(yǔ)從句,需用一般現(xiàn)在時(shí)表示將來(lái)。if you work hard,you’ll succeed in passing the exam.we’ll go out for a walk as soon as the rain stops.一般現(xiàn)在時(shí)還可用在戲劇、電影的劇本解說(shuō)、體育比賽的解說(shuō)以及圖片的說(shuō)明等場(chǎng)合。tom carries the ball to the left.the picture shows us how they built the motorwaylast year.
現(xiàn)在進(jìn)行時(shí)構(gòu)成：動(dòng)詞原形-ing(1)一般情況在動(dòng)詞原形后加-ing。例如：go—going,stand—standing(2)以不發(fā)音的e結(jié)尾的動(dòng)詞，去掉e,再加-ing。例如：arrive—arriving(3)少數(shù)幾個(gè)以-ie結(jié)尾的動(dòng)詞，須將ie變成y,再加-ing。例如：die—dying lie—lying(4)以元音+輔音結(jié)尾的重讀閉音節(jié)，雙寫(xiě)輔音字母，再加-ing。例如：stop—stopping用法
用法
例句表示現(xiàn)在（指說(shuō)話(huà)人說(shuō)話(huà)時(shí)）正在發(fā)生的事情。tom is playing basketball now.we are waiting for you.表示目前一段時(shí)間內(nèi)正在進(jìn)行的動(dòng)作,說(shuō)話(huà)時(shí)動(dòng)作未必正在進(jìn)行。mr green is writing another novel.she is learning piano under mr smith.與always,constantly,forever 等詞連用,表示反復(fù)發(fā)生的動(dòng)作或持續(xù)存在的狀態(tài),往往帶有說(shuō)話(huà)人的主觀色彩,如贊嘆或厭惡等。she is always changing her mind.（表示厭煩）you should not be constantly making the same mistake.表示在最近計(jì)劃或安排要進(jìn)行的動(dòng)作。常限于go,come,leave,start,arrive,return,stay,do,have,wear等表移動(dòng)、方向的詞。we are starting the work in a few days.my friends are coming to see me tomorrow.the plane is taking off in a few minutes.
一般將來(lái)時(shí)
構(gòu)成
用法
例句shall/will+動(dòng)詞原形表示單純的將來(lái)；必然的將來(lái)；表示意愿、決心we shall know more and more as time goes on.