PAGEPAGE2unit2語法專項頻率副詞等(含習題)頻率副詞概念：是表示某事發(fā)生頻率的副詞，即用來表示某事在一段時間內所發(fā)生的次數(shù)。always，usually，often，sometimes，hardly，never，是英語中最常見的幾個頻率副詞。位置：一般放在行為動詞之前，be動詞、助動詞及情態(tài)動詞之后。辨析：含義和程度的區(qū)別always的頻率是100％，意為“總是;永遠地”。usually的頻率是70％左右，意為“通常;平常”。often的頻率是50％左右，意為“常常”。sometimes的頻率是20％左右，意為“有時”。hardly的頻率是5％左右，意為“幾乎不;簡直不”。never的頻率為0，意為“從來不;永不”。always>usually>often>sometimes>hardly>never其他：一些表示頻率的詞組，如onceaweek，twiceamonth，threetimesayear，fourtimesayear等，它們準確地表達出事情發(fā)生的頻率。我每天喝牛奶，吃蔬菜。Idrinkmilkandeatvegetableseveryday.我每周鍛煉一次。Iexerciseonceaweek.我一年去看望我奶奶四次。Ivisitmygrandmotherfourtimesayear.拓展：辨析：howoften/howsoon/howlong/howfar的區(qū)別howoften表示“多長時間一次或每隔多久”，就做某事的頻率提問。對howoften的回答一般是“twiceayear”,“threetimesaweek”等你多長時間看你媽媽一次?--Howoftendoyouvisityourmother?一周一次。Onceaweekhowsoon表示“多久之后”，側重某人/某事能多長時間完成。對howsoon的回答一般為:“in+時間段”。如intwodays,infiveyears他要多久回來?Howsoonwillhebeback?一小時以后。Inanhour.howlong表示“時間多久或物體多長”，表示時間時，側重指“一段時間”。回答一般是時間段，如forthreedays，threeyears他在這兒待了多久?Howlongdidhestayhere?大約兩個星期。Abouttwoweeks.howfar表示“多遠” ,對距離進行提問這兒離動物園有多遠?Howfarisitfromheretothezoo?6千米It's6kilometres.辨析：sometimes，sometime，sometimes，sometime的區(qū)別sometimes頻度副詞。意為“有時”，多用于一般現(xiàn)在時，對它進行提問常用howoftensometime:副詞，意為“在某時（過去或將來）”，表示的是不確切或尚末確定的時間。對它提問用when。sometimes:名詞短語。意為＂幾次，幾倍”。time此處是可數(shù)名詞，對它提問用howmanytimessometime：名詞短語。意為“一段時間”。time是不可數(shù)名詞，對它提問用howlong綜合練習：_______domostChinesepeoplehavemeals?Threetimesaday.AHowlongBHowmanyCHowoftenDHowmuchMr.Brown_______exercises,soheisveryfat.AoftenBsometimesCalwaysDneverLiMingiskindandhelpful，butheisalsoalittlecareless_______.AsometimeBsometimesCsometimesDsometime4.I_____playfootballonFridayafternoon.AsometimeBsometimesCsometimeDsometimes5.Designateddrivers(代駕司機)are_______seeninourcitybecausedrunkdrivingisnotallowed.AseldomBhardlyCalways6.Anna_______getsupat6:40a.m.,butshegetsupat7:30a.m.today.AneverBusuallCalsoDreally7.Youplaythepianosowell.______doyoutakepianolessons?Igotopianolessonstwiceaweek.AHowlongBHowmanyCHowoftenDHowmuch8.Booksareourfriends._________doyoureadbooks?Ireadbookseveryday.AHowoftenBHowsoonCHowlong9.Doyouusually______thebustoworkeveryday?No,______Igotherebycar.Aby,sometimesBtake,sometimeCby,sometimeDtake,sometimes10.______doyouplaytheguitar?Threetimesaweek.AHowmuchBHowoldCHowlongDHowoftenHowoftendoyoudoexercise?_________.ASometimesBThreehoursCAtthreeo'clockDIntwohours______doesyourgrandpadoexercise?Everyday.AHowsoonBHowlongCHowoftenDHowfar_______willyoucomebackhome,Danie?Intwentyminutes.I'llhurry.AHowsoonBHowoftenCHowlong14.Excuseme，_______isitfromthenearestpostoffice?Onlytenminutes’walk.AhowlongBhowmuchChowmanyDhowfar15._____doyougobacktoyourhometown.Twiceayear.AHowlongBHowsoonCHowfarDHowoften16.______doyouplaybasketball?Onceaweek.AHowmuchBHowlongCHowoftenDHowfar17.______h