第三课时SectionA(GrammarFocus～3c)单元同步语法精讲表示频率程度的副词称为频度副词。eg：always，usually，often，sometimes，seldom和never等。这些词表示经常性的动作或状态，而不是某一具体动作，常用于一般现在时中。1．频度的区别①always总是；一直；始终100%②usually通常；经常90%③often常常；经常70%④sometimes有时；不时40%⑤hardlyever几乎从不；很少；难得5%⑥never从不；决不0%2．它们在句中的位置：频率副词在句中常位于be动词、助动词、情态动词之后，实义动词之前。sometimes有时可位于句首或句末。3．表示频率的短语有：once/twiceaweek，threetimesaday，everyweek/year等。4．对频率副词或短语提问用howoften。5．频率副词或短语常与一般现在时态连用。eg：Inevereatmeat.我从不吃肉。Jimusuallydoeshishomeworkintheevening.吉姆通常晚上做作业。Sallydoesn'toftenwatchTVattheweekend.萨利周末不常看电视。Howoftendoyoueatfruit？你多久吃一次水果？单元同步语法强化训练一、单项选择。1．Ifmyfriendshaveanyproblems，mydooris________opentothem.(2014，安徽)A．neverB．seldomC．sometimesD．always2．—Didyougotothecinemalastnight?—Oh，no.I________gotothecinema.Thetickets，youknow，aretooexpensive.(2014，宁波)A．alwaysB．hardlyC．usuallyD．often3．Mysister________goestobedearlybecausesheneedsalotofsleepeveryday.(2014，南昌)A．alwaysB．sometimesC．hardlyD．neverDBA4．LiKe________runsinthemorning，forhewantstobehealthy.(2014，成都)A．neverB．oftenC．hardly5．—Howoftendoyougoskating?—________.Ican'tskateatall.(2014，温州)A．AlwaysB．SometimesC．SeldomD．Never6．—Whereshallweeattonight？(2014，河南)—Let'scallHarry.He________knowsthebestplacestogo.A．onlyB．nearlyC．neverD．always7．I________watchthisTVprogram.It'sveryinteresting.(2013，徐州)AoftenBneverChardlyDseldomBDDA8．—________doyougotothesportsclub?—Atleastonceaweek.(2014，苏州)A．HowlongB．HowoftenC．HowmuchD．Howfar9．—LookattheflowersIgaveyoulastmonth.Theyaredying！________doyouwaterthem?—Sorry，Iforgottowaterthem.(2014，菏泽)A．HowlongB．HowoftenC．HowsoonD．HowmuchBB二、按要求改写句子。10．Theboydrinksmilkonce_a_day．(对画线部分提问)____________________theboy________milk?11．Shesleepsseven_hourseveryday.(对画线部分提问)____________________doesshesleepeveryday?12．SheusuallywatchesTVintheevening.(变为一般疑问句)________she________________TVintheevening?13．Jeanishavingmilkandbreadforbreakfastnow.(用sometimes改写句子)Jean_______________________milkandbreadforbreakfast.14．Alicealwaysdoesherhomeworkat7p．m.(变为否定句)Alice________________herhomeworkat7p．m.HowoftendoesdrinkHowmanyhoursDoesusuallywatchsometimeshashardllyeverdoes
