Whoismakingsuustbethe。
2。It用来指时间、距离和自然现象。例如:Whattimeisitnow?
It’sraininghard。
3。It作形式主语或形式宾语。真实主语或宾语由动名词、不定式或从句充当。例如:Isitpossibletlishveryquickly?(形式主语)Wehavemadeitclearthatwewillagain。(形式宾语)4。It放在强调句句首。例如:
ItisTomwhobrokethewindow。
Itwastheeachother。
I。VocabularyandStructure
&hereare20iehispart。ForeacetherearefourarkedA),B),dD)。ChoosetheOpletesthesentence。
1。Shelikesthe_____flowerihenaturalone。
A)articleB)adventuretD)artificial2。Thishighwayruns_____totherail>
A)identicalB)suitableC)parallelD)distributioforthishouseis$250。Butyouneedalsopay$50firstasthe_____。
&B)cilC)desiredD)submitted4。Therebuildingplanwas_____totheittee。
GrammarReview
Exercises
A)tapedB)admittedC)desiredD)submitted5。Jaworkedveryhardandfinallyhe_____success。
A)madeB)foundC)soughtD)achieved6。It’sjusta(n)_____bite。Thereisnothingto>
&emplesectD)arbitrary7。Jackis_____ofstealingthebooksfromthelibrary。
A)accusedB)witrainedD)foualsexpaheyareheatedand_____whencooled。
A)indicateB)eliminatequerD)traorderto_____agoodknowledgeofEnglish,hegaveuphisjobaudyinanEnglishschool。
A)requireB)inquireC)acquireD)address10。Hecheckedcarefullyto_____thepossibleerrorsinhisdesign。
&eB)exlargeD)vibrate11。—Someohedoor。
—_____?
A)WhatisitB)WhoisitC)WhoisheD)Whieisit12。Theybelieve_____theirdutytolookafterthemoralsofthosewholiveiy。
A)thatB)thisC)itD)>
13。Asolardayisthelengthoftime_____theEarthtorevolveohesun。
A)takesB)takesitC)hetakesD)ittakes14。_____fromthesulighta。
A)ItisB)ItwasC)ThatisD)Thatwas15。Thoughnooneknew_____,itwouldbethelasttimehewouldbepresentatthebank。
A)thatB)itC)soD)this
16。—Wheovisityou?
—Anytimeyoufeel_____。
A)oneB)foritC)likeitD)so17。_____happeshewasnotathome>
A)ItB)WhatC)ThatD)This
18。ThemanissobadlyiI’mafraidhehas_____。
A)overB)diedcaughtD)hadit19。Isider_____advisabletotellherbeforehand。
A)thisB)thatC)themD)it