2017-2018高中英语北师大版必修1:Unit 1 Section Ⅳ Grammar
15页1、Section_Grammar单元语法项目(一)一般现在时和现在进行时语法图解探究发现What do you do at weekends?Do you often study at weekends?I often watch TV series, sport and news.I seldom have time for fun and other activities with my family.Light travels faster than sound.The train leaves at 7 oclock tomorrow morning.We are learning English at the moment.Listen, shes now complaining about her lunch.Brian Blakey is sitting on his sofa.Brians wife is working as a secretary.我的发现(1)句使用了一般现在时;其谓语动词的构成是:动词原形或动词的第三人称单数形式。(2)句使用了现在进行时;其谓语动
2、词的构成是:动词ing形式。(3)一般现在时的时间状语:at_weekends,_often,_seldom等。(4)现在进行时的时间状语:at_the_moment,_now等。一、一般现在时(一)构成和句式肯定式:主语do/does或be(am, is, are)其他否定式:主语do/doesnot或be(am, is, are)not其他疑问式:Do/Does或Be(Am, Is, Are)主语其他(二)用法1表示经常、反复或习惯性的动作常与often, always, usually, sometimes, every time/day/month/year ., once a day/month/year ., now and then, at the weekend等时间状语连用。I leave home for school at 7 oclock every morning.我每天早晨七点钟离开家去学校。She often answers some personal emails at the weekend.她经常在周末回复一些私人邮件。即时演练1用所给词的适当形式填
3、空On Monday mornings it usually takes (take) me an hour to drive to work although the actual distance is only 20 miles.We sometimes play (play) basketball after school.I always do (do) my homework on weekends.2表示主语目前所处的状态、个性特征、能力等I love to get together with my friends.我喜欢和我的朋友在一起。We have a very good relationship with the children.我们与孩子们相处得非常融洽。即时演练2(1)单句语法填空He likes (like) playing basketball while his brother loves (love) surfing the Internet.Ann writes (write) good English but does not speak wel
4、l.(2)单句改错This machine didnt work.It hasnt worked for years. didntdoesnt3表示客观真理、客观存在或科学事实The earth moves around the sun.地球绕着太阳转动。Two and four makes six.二加四等于六。名师点津此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。I learned that the earth goes around the sun when I was in primary school.我上小学时就知道了地球围绕太阳转。即时演练3(1)完成句子The teacher told us all the live things on the earth depend_on_the_sun (依靠太阳)My mother always tells us that failure_is_the_mother_of_success (失败是成功之母)(2)单句改错My geography teacher told us oceans covere
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