高一英语人教版必修一unit3 语法.ppt
Unit 3 Travel Journal,现在进行时：,1.现在进行时的构成：助动词am/is/are+现在分词2.现在进行时的适用情况：表示说话时正在进行的动作。近来一段时间一直在进行的动作，但说话时动作不一定进行。He is learning driving these days.这些日子他正在学开车。表示发展中或正在改变的情况。The weather is going colder and colder.表示在做某事的过程，通常是一个习惯性、经常性的动作 You look pretty when you are smiling.你微笑时看上去很美。与always,forever 等副词连用，表示反复发生的或习惯性的动作，往往含有赞赏、抱怨、生气、厌烦等情绪。She is always complaining about others.,现在进行时表将来,1.表示即将发生的动作，常有“意图”、“安排”或“打算”的含义，使句子更加生动，给人以期待感。此时多使用表示位置转移的动词（come,go,start,begin,arrive,leave,move,stay,etc)E.g We are leaving early tomorrow morning.我们明天一早就出发。2.表示将来的现在进行时除使用位移动词外，也可使用某些非位移动词（do,buy,have,meet,play,spend,etc),此时句中一般要有表将来的时间状语。My mother is buying me a bike soon.Tom is having a party tomorrow.3.偶尔也可以表示较远的将来 When I grow up,Im going to join the army.,现在进行时表将来,4.表示将来的进行时有时含有“决心”的意思，此用法多用于否定结构中。E.g Im not going to the cinema.我不去电影院了。Im not waiting for him any longer.我不再等他了。,表将来的其它表达方式：1.be going to do:表示人主观上近期的“打算、意图、计划”等E.g Are you going to visit the museum this afternoon?表示有某种迹象表明最近将会发生的事。Look!Its going to rain.看！天要下雨了。（可通过天上的云等迹象看出来）2.wil/shall+do:表达单纯的将来，是对未来事情发生的“预见”。will用于各种人称，shall一般用于第一人称。We shall/will be there by twelve.我们将于12点到那儿。Ill go back to my hometown next month.下个月我要回老家。,3.be+to do:表示预定，按计划或安排将发生某事，有时也表示命令、禁止或可能性。The French President is to visit China next month.No one is to leave the room without permission.4.一般现在时表示将来:常用于表示按计划、按规定或是按时刻表来进行的未来动作，仅限于一些转移动词。,法国总统将于下个月访华。,未经允许，任何人不得离开这个房间。,The plane arrives at 2:00 this afternoon.飞机将于今天下午2：00抵达。5.be about to do:正要，即将。表示马上要发生的动作。不能与表示将来时间的状语连用，常用于：be about to do.when.正要做.,这时.I was just about to go to work when someone called me up.,我正要去上班的时候，这时有人打电话给我。,Exercise:,-I have not finished my dinner yet.-But our friends_ for us.A.will wait B.wait C.have waited D.are waiting Ive won a holiday for two to Florida.I_ my mum with me to have fun there.A.am taking B.have taken C.take D.will have taken,A,D,Exercise:,Ladies and gentlemen,please fasten your seat belts.The plane_.A.takes off B.is taking off C.has taken off D.took offHurry up!The train_.You know it_ at 8:30 am.A.leaves;leaves B.is leaving;leaves C.leaves;is leaving D.is leaving;is leaving,B,B,
