文档介绍：,常与now,listen,look等词连用,结构是主语+be动词(am,is,are)+:’!!,否定句在be动词后+,常与often,usually,sometimes,always,everyday(weekyear…)onSundays等词连用。结构是主语+动词原形;当主语为第三人称单数即he,she,it,Tom,mymother,theboy等词时,:?Yes,’,does否定句借助于don’t,doesn’t,后面动词一定要还原。,常与justnow;amomentago;…ago;yesterday;last(week;month;year;Monday;weekend);thismorning等词连用,结构是主语+be动词的过去式(was;were)或主语+动词的过去式。注意:be动词与动词过去式不可同时使用。如:??Ivisitedafarm问句有be动词将be动词移前,没有be动词借助于did,后面动词还原;否定句有be动词在后面加not,没有借助于didn't后面动词还原。,常与tomorrow,nextweek(year;Tuesday…),thisweek(weekend;evening;afternoon;…)today等词连用。结构是主语+be(am,is,are)goingto+动原或主语+will+动原。如:Whatareyougoingtodotomorrow?;;can’t;should;shouldn’t;must;may后一定加动词原形。如:Thegirlcan’tswim,’ttalkinclass,youshouldlist