Unit6Grammar:Conditionalsentences学案1if引导的条件状语从句Readthesentencesandworkouttherule
IfIamhappy,Iwillsmile
Ifitissunny,Iwillplayfootball
Ifwearehappy,wewilldance
Theywillplaytheguitarwelliftheyworkhard
Iwon’tgofishingifitrains
Wemuststopifthetrafficlightsarered
if表示“______”的意思,引导条件状语从句,表示假如有从句的动作发生就(不)会有主句的动作发生
if的条件句位置灵活,可直接放在主句后面,_____(用/不用)逗号隔开(例4、5、6)
;当if引导的从句放在主句前时,_____(用/不用)逗号隔开两个句子(例1、2、3)
时态:主句用___________时,if引导的条件状语从句用__________时表示将来意义,简称“主将从现”
例:Iwillgofishingifitdoesn’train
一般将来时:一般现在时:①②③3
如果主句中含有can,may,must等情态动词,从句也要用____________时
例:Wemuststopifthetrafficlightsarered
顺口溜:if条件句不一般,几个要点记心间;条件句,放在前,逗号要放句中间;条件句表可能,主句多用将来时
一、William’smumisgivinghimadviceabouthisproblems
Matchthehalf-sentencesfromtheboxestocompleteheradviceforhim
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Ifyoucheckyourtimetable(课程表)eve