单元重难点精析精练;【典例】Oh，mysweaterisontheground.Pleasehelpmepickitup．
【精讲】pickup意为“拾起，捡起”，是“动词＋副词”型短语，若宾语为人称代词，须将人称代词置于pickup之间。pickup还可意为“接电话，收听”。;【精练】
1．请把地板上的书捡起来。
Please___________thebooksonthefloor.
2．书在地板上，请把它们捡起来。
Thebooksareonthefloor.Please_______________．
3．电话铃响了，帮我接一下好吗？
Thephoneisringing.Couldyouplease___________forme?;【典例】ThecarbelongstoKate.
【精讲】belongto意为“属于；是……的成员”，其后加所属对象。在运用中要注意：①该词组不可用于进行时态；②该词组不可用于被动语态。;【精练】
4．Chinaisstillacountry_____theThirdWorld.
A．belongstoB．BelongsC．belongedtoD．belongingto
5．Thebooksbelongto_____．
A．meB．IC．MyD．mine
6．—Doyouknowwhothepen____？
—Sorry，Idontknow.
A．belongB．belongto
C．belongsD．belongsto;【典例】Dontmakesomuchnoise．Icanthearanysound．
【精讲】sound意为“声音，音响”，指人能听到的任何声音，noise意为“声音，噪音，喧闹声”，指不悦耳的，不和谐的嘈杂声、喧闹声，voice指说话声，歌唱声，电台声音，鸟叫声。;【精练】
7．Thereistoomuch____inthisclass.
A．soundB．voiceC．noiseD．noises
8．Billssisterhasaverybeautiful____．Shecansingverywell.
A．sweaterB．soundC．voiceD．dress
9．Atthefootofthemountain，youcanhearthe___ofrunningwater.
A．soundB．voiceC．noiseD．silence;【典例】Hecouldntacceptouradvicebutourgifts.
【精讲】receive常指被动地收到或接到，而accept则指主动地“接受”。表示“接见，接待”时，要用receive而不用accept。;【精练】
10．—Didyourpenpalsendapostcardtoyoulastweek?
—Yes.ButIhavent____itsofar.
A．avoidedB．acceptedC．refusedD．received
11．I____mybestfriendMarysletteryesterdayandIwillwritetoherthisevening.
A．acceptedB．receivedC．gaveD．heard
12．—WouldyoupleaseseethefilmIronMan3withmetonight，Kate?
—Idloveto，butIve_____Lindasinvitationtodinner.
A．seenB．UnderstoodC．receivedD．accepted;【典例】Somepeoplethinktherockscanstoppeoplefromingill.
【精讲】stopsb.fromdoingsth.意为“阻止某人做某事”，相当于preventsb.fromdoingsth.，其中介词from可以省略，其后接名词或动词-ing形式。;【精练】
13．Iwilltrymybesttostopmysonfrom____thesamemistake.
A．makeB．madeC．makesD．making
14．Theheavyrain____usfro