中学英语it用法概览Word格式.docx
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---It’smysister.
12.---Whoisit?
---It’sme.（有人敲门）
13.---Someoneisringingthedoorbell.Goandseewhoitis.（敲门）
14.---Oh,bytheway,thereisatelephonecallforyou.---Whowasit?
（打电话）
15.---Whoismakingsomuchnoise?
---Itmustbethechildren.
16.Thereisapersonknockingatthedoor.Whocanitbe?
17.Justatthattime,incameagirl.ItwasMark’ssister.
18.Thereisayoungladyatthedoor.Itishisdaughter.
19.Whatabeautifulbaby!
Isitaboy?
20.Ababyislyinginthecradle.Itwasborntwomonthsago.
21.Thebabycrybecauseitishungry.
22.Thebabyhasgotitsfirsttooth.
注意：
若身份已确定则要用人称代词。
23.Thereisaladyatthedoor.Shewantstoseeyou.
向别人介绍某人时用this。
24.Thisismyfriend,Jim.
三、指代前述内容,或者是文中的内容
25.Beautyiseverywhere.Itmakesushappy.
26.Thereisafootballmatchtonight.Itstartsatsixo’clockintheevening.
27.Ifyourememberthesepoints,itwillhelpyou.
28.Whenwedieforourmotherlandorthepeople,itisaworthydeath.
29.Youhavehelpedmealot.Ishallneverforgetit.
30.YangLiweiwasthefirstChinesetobesentupintospace.ItmadetheChineseproud.
31.Hismotherisfifty-seven,butshedoesn’tlookit.
32.Mr.Wangwasill.Haveyouheardit?
33.---Thankyouforyourhelp?
---Don’tmentionit.
34.Althoughwecan’tseeit,thereisairallaroundus.
35.Itwouldbewonderfulifyoucouldcometohelpus.
四、指时间
36.---Whattimeisitbyyourwatch?
---It’stenminutespasttwo.
37.---Whatdayisittoday?
---It’sFriday.
38.---What’sthedatetoday?
---It’sMay1st.
39.It’searlyspring,butit’sstillverycold.
makeit+时间把时间定在……；
约定……
40.Let’smakeiteighto’clock.
41.Let'
smakeitthreeo'
clocksharp.我们约定3点整吧。
It’stime（forsb.）todosth.
42.It’stimetohavesupper.=It’stimeforsupper.
53.It’stimetotakeawalk.
44.Itistimeforustosetout.
45.Itistimeforyoutogotobed.
It’stimeforsth.
46.It’stimeforclass.（口语中可省略为Timeforclass.）
47.It’stimeforlunch.（口语中可省略为Timeforlunch.）
48.It’stimeforabreak.（口语中可省略为Timeforbreak.）
49.It’stimeforarest.（口语中可省略为Timeforrest.）
50.It’stimefordinner.（口语中可省略为Timefordinner.）
It’shigh/abouttime+…did/should…（虚拟语气）
51.It’shightimeyouleft.
52.It’sabouttimeweshouldworkhardatourlessons.
It’is/hasbeen+时间+since……
53.It’stwentyyearssincesheleftme.
54.Ithasbeen20yearssinceIlefthere.
55.Iheardithadbeen20yearssincetheydepartedfromeachother.
Itwas/willbe+时间名词+before从句“在多长时间后才发生某事”
56.Itwastwentyyearsbeforetheymetagain.
57.Itwon’tbelongbeforeyourecover.
58.ItwillbetwoyearsbeforeIcomehereagain.
五、指天气等自然现象
59.It’sverycoldinwinterinHarbin.
60.It’sfivedegreebelowzero.
61.Itwillbewindytomorrow.
62.Itwillsnowheavilytomorrow.
63.Thevolleyballmatchwillbeputoffifitrains.
64.Itwassnowingheavilywhenhewentout.
65.---What’stheweatherlikeinBeijing?
---It’scloudy.
六、指距离、速度、金钱、度量
66.It’sjusttwostopstothepark.到公园只有两站路。
67.It’sabouttenkilometersfrommyhometomyschool.
68.It’sabouttenminutes’walkfromheretothezoo.
69.Itis90dollarsinprice.
70.It’s200mphinvelocity.速度是每小时200英里。
Itis+数词+meters/miles/kilometerslong/wide.
71.It’sthreekilometerslongforfromeasttothewest.
72.It’s200meterswidefromthissidetothatside.
七、指环境情况
73.It’sveryquietintheforest.
74.It’llbeveryinterestingatthepartytoday.
75.Itisalwaysverycleanandtidyinmyson’sroom.
76.It’sverychillyinmyroom.
77.Itwasnoisywhenhegottotheclassroom.
78.Ifitisconvenienttoyou,Iamgoingtovisityou.
79.Itwasexcitingwhenwewatchedtheastronautstakingspacewalks.
八、替代this或that
80.---What’sthis/that?
---It’smypencilsharpener.
81.That’snotinteresting,isit?
82.Thisisyourpoint,isn’tit?
九、作形式主语
（一）、替代动词不定式
Itis+adj.todosth.
83.Itisgoodtoeatvegetables.
84.Itisanhonortohavebeenaskedtospeakatthemeeting.
Itis+adj.+forsb.todosth.
此结构中的形容词是描述事情的、说明句尾动词不定式特征的形容词。
这些形容词主要有certain,clear,dangerous,difficult,easy,hard,illegal,impossible,important,obvious,possible,polite,proper,right,unnecessary,unimportant,unlikely,useless,useful等。
85.Sheissuchaneccentricwomanthatitisdifficultforanyonetogetonwellwithher.
86.Itisagoodcustomforyoungpeopletogiveuptheirsetstooldpeopleinthebusestrains,orsubways.
Itis+adj.+of+sb.todosth.
注意：
本句型中的形容词一般表示人（逻辑主语）的某种特性，要么是夸赞，要么是贬损。
主要有brave,careful,careless,considerable,cruel,clever,foolish,good,grateful,generous,impolite,kind,nice,polite,rude,silly,stupid,thoughtful,unkind,wise,wrong,等。
87.Itiskindofyoutolendmesomanybooks.
88.Itiscleverofyoutosolvesodifficultaproblem.
89.Itiswiseofyoutorefusehisoffer.
90.Itisremarkableofhertobealwaysworkinglikethis.
Itisapity（forsb.）todosth.很遗憾做某事
91.Itwouldbeapitytomisstheopeningceremony.
92.ItisapityforyounottogotoPariswithus.
Itisagreatrelief（tosb.）todosth.做……是一大慰藉；
……真叫人送了一口气
93.Itisagreatrelieftohaverainafteralongtimeofdrought.
94.It’sagreatrelieftometoknowyouaresafe.
95.It’sagreatrelieftohearthatshewontheprize.
Itisworthwhiletodosth.做……是值得的
本句型就相当于Itpaystodosth.；
worthwhile不要写成worthwhile。
96.Itisworthwhiletotakeatripabroad.
97.ItisworthwhiletolearnEnglish.
It’sbesttodosth.最好做某事=Todosth.isbest.
98.It’sbesttosetofftomorrow.最好明天动身。
=Tosetofftomorrowisbest.
99.It’sbesttoreviewthelessonsonemoretime.=Toreviewthelessonsoncemoreisbest.
It’sbettertodoAthantodoB=TodoAisbetterthantodoB.
100.Itisbettertoborrowthantobuy.=Toborrowisbetterthantobuy.
101.It’sbettertostayathomethantogotothecinema.=Tostayathomeisbetterthantogotothecinema.
Howisitpossibletodosth.?
……这怎么可能？
102.Howwasitpossibletofalldownfromthethirdfloorwithoutbeinghurt?
103.Howisitpossibleforagirloftentoflyanairplane?
It’snousetodosth.做……是没有用的
104.It’snousetoarguewithhim.
105.Hedoesn’tknowtheanswer,soitisnousetoaskhim.
Ittakes（sb.）+时间/条件+todosth.某人花了多少时间做某事；
做某事需要……（条件）
106.Ittakesmehalfanhourtowalkfromheretoschool.
107.HowlongdoesittaketoflyBeingtoLondon?
108.IttakespatienceandhardworktomasterEnglish.
Itcostssb.somemoneytodosth.某人花多少金钱做某事
109.Itcosthimagreatdealofmoneytotakethetrip.
100.Itcostme2000dollarstocollectthesestamps.
Itoccurstosb.todosth.某人突然想到做某事
111.Itneveroccurredtometotakeadvantageofyou.我决没有想到过要占你便宜。
（利用你）
Itfeels+adj.+todosth.
112.Itfeelspleasanttotalkwithher.同他谈话使人感到愉快。
113.Itmustfeelstrangetohaveatwinbrother.
114.Itfeelsunhappytobewithhim.同他在一块让人感到不舒服。
115.Itfeelsnicetotakeawalkintheevening.晚间散散步感觉很好。
其它例句
116.Itseemsapitynottohavetakenhisadvice.
117.Itwon’thurttopostponethepartyforafewweeks.
118.Itdidsurprisemetohearyousayso.
119.Itgavegreatpleasuretohavefinishedthisworkaheadofthedeadline.
（二）、替代动名词
动名词可以直接位于句首作主语，但为了强调，或动名词过长时，要用it作形式主语置于句首，而把动名词放到句子最后。
这也是英语尾部重压原则所要求的。
Itisnogood/use（in）doingsth.做……是没用的；
做……是白费力气的
=Itisofnogood/usedoingsth.
=Itisnotanygood/usedoingsth.
120.Itisnosuecryingoverspiltmilk.覆水难收，悔恨无益。
121.Itisnousetryingtodrownyoursorrowsindrink.解酒浇愁无济于事。
122.It’snogoodgettingcrosswithhim.和他生气没有用。
123.It’snogoodreadingwithoutfullunderstanding.
It’sexcitingdoingsth.
124.It’sexcitingmeetingyouhere.
It’sdangerousdoingsth.
125.It’sdangerousplayingwithfire.
It’sfoolishdoingsth.
126.It’sfoolishbehavinglikethat.
It’spleasantdoingsth.
127.It’spleasantlyinginthesun.
It’sfundoingsth.
128.It’sfunbeingamagician.
It’snousedoingsth.做……没有用
129.It’snousecryingoverspiltmilk.
130.It’snouseregretting.
131.It’snouseyourunningaway.
1.辨析：
It’snousedoingsth.&
It’snousetodosth.
132.It’snousedoingsth.通常指比较一般的情况。
133.It’snousetodosth.常指具体的情况，也就是指在某一特定的场合所发生的事情。
2.类似句型
134.It’suselesstodosth.
135.It’sofnousetodosth.
It’sanuisancedoingsth.做……很烦人。
136.It’sanuisancehavingtodosomuchhomework.
这一结构中的动名词还可加one’s即物主代词来充当该动名词的逻辑主语。
137.It’sawasteoftimeyourtalkingtohim.Itisjustlikecastingpearlsbeforeswine.
138.Itwasgreatencouragementtoustheircomingtohelp.
139.Itisuselessdoingthatoverandoveragain.
辨析：
It’snicetodosth.&
It’snicedoingsth.
140.It’snicetodosth.常用于见面或活动开始；
It’snicedoingsth.则用于分手或活动结束。
141.It’snicetakingawalki
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