四年级上册英语课件Unit1Lesson25北京课改17.ppt

UNITONEWHYAREYOUSOHAPPYLesson2-现在进行时,现在进行时,主语+am/is/are+doing(动词+ing),表示某人正在做某事的时候用现在进行时。,现在进行时怎么构成?,什么时候用现在进行时?,Heissinging.,sing,draw,Heisdrawing.,dance,Theyaredancing.,这种时态的句子由两种动词组成。,Presentcontinuoustense现在进行时,直接在动词后面加ing。,doing,talking,watching,playing,reading,looking,Presentcontinuoustense现在进行时,Practice,去e再加ing。,have,write,ride,live,drive,move,Presentcontinuoustense现在进行时,Practice,以重读、“辅元辅”结构结尾的动词需要双写最后一个字母再加-ing。,jogging,sitting,dropping,running,getting,putting,Presentcontinuoustense现在进行时,Practice,训练集中营写出下列动词的分词形式talk_sleep_watch_sit_listen_make_laugh_lie_cry_sing_cut_write_,talkingsleepingwatchingsittinglisteningmakinglaughinglyingcryingsingingcuttingwriting,Presentcontinuoustense现在进行时,Negativesentences否定句,Presentcontinuoustense现在进行时,Questions一般疑问句,将be动词放在句子开头成为一般疑问句。,Yes,sheis./No,sheisnt.,Yes,theyare./No,theyarent.,Cherryisridingabicycle.,Theyarecooking.,Presentcontinuoustense现在进行时,Questions特殊疑问句,Questionswithquestionwords:,常与现在进行时连用的时间状语,now现在,rightnow现在,atthemoment现在、此时此刻,前面有look，listen，Its(时间)等词时，也用进行时。,Look!Theboys_footballoverthere.,areplaying,Its7a.m.He_toschool.,isgoing,Look,Mr.Wu_(play)football.-WhereisLiLei?-He_(water)treesinthegarden.3.Thebaby_(sleep).,用动词现在进行时态填空:,isplaying,iswatering,issleeping,4.Look!Adog_(run)afteracat.5.TheGreenfamily_(have)lunchnow.6.NowI_(study)atanewschool.7.Who_(knock)atthedoor?8.Theboys_(swim)intheri