
Learning bjects
Understanding the three uses f it as the empty subject
Use it t refer t the time, seasn, weather, distance and temperature
Use it t replace a t-infinitive
It seems/appears that…
Hw many prnuns it can yu find?
What des it refer t?
It 指代具體事物 (water)
It 沒有指代具體的事物
It 沒有指代具體的事物。 It 作為形式主語,沒有實際語義。
第二個it 指代具體事物 (wrk)
第一個It 沒有指代具體的事物
Presentatin
We can use it as the empty subject like this:
It is ne ’clck.It is summer nw.It rained all day.It is nly a five-minute walk frm my hme t the schl.It is ht in this rm.
Using it as the empty subject
It’s nine ’clck in the mrning. My bedrm flr is a pl f water.
A Answer these questins using it as the subject.
It’s ten ’clck in the mrning.
It’s 10 May, 2017.
It’s summer nw.
It is abut 20-minute walk frm my hme t the schl.
B Put the wrds in the crrect rder t make meaningful sentences.
It is time fr supper nw.
It is autumn in Australia nw.
It is abut five kilmetres t the park.
It was windy yesterday.
We can als use it as the empty subject f a sentence t replace a t-infinitive.
It’s imprtant t stick with it.
It tk a lng time t build the huse. It is wrng t pay n attentin t Kevin.It is nt a gd idea t sit arund and wrry abut the fld.
T build the huse tk a lng time.T pay n attentin t Kevin is wrng.T sit arund and wrry abut the fld is nt a gd idea.
In mst cases, we use it at the beginning f the sentence as an empty subject t refer t the infinitive.
It tk a lng time t build the huse. (T build the huse tk a lng time.)
從這里走到白云山頂大約要花一小時。___ ______ abut an hur ___ ______ t the tp f the Baiyun Muntain frm here.
It takes
It is wrng t pay n attentin t Kevin. (T pay n attentin t Kevin is wrng.)
參觀廣州博物館對我們很有教育意義。 ________ _______ very educatinal fr us _________ ___________ Guangzhu Museum.
It is
t visit
It is nt a gd idea t sit arund and wrry abut the fld. (T sit arund and wrry abut the fld is nt a gd idea.)
When it was time fr the villagers _______ t market. A. gB. gingC. t gD. went
C Write a sentence using it and a t-infinitive under each picture belw.
It is imprtant t stay calm when there is a fire.
It is dangerus t start a fire in the frest.
It is a gd idea t take an umbrella.
It is nice t have a picnic in the park.
We can als use it as the empty subject in the fllwing sentence pattern:It seems/appears that …
D Put the wrds in brackets in the crrect rder t cmplete the cnversatins.
It seems that a typhn is cming.
It appears that the flight has been cancelled.
It seems that smething bad has happened t her.
1. I drpped my watch and it brke.
it用于上文提到的情況
2. Is it a by r a girl?
it 指性別不明的嬰兒或用于確認某人的身份
3. It’s t late t g there nw. It rained all day yesterday.
it 用于指時間、距離、價值、天氣等自然現(xiàn)象
4. I find it difficult t d the jb well.
用It作形式主語放到句首, 指代動詞不定式,動詞的ing形式和主語從句,通常把它們放在謂語動詞后,常見句型有:?
It作形式主語常見句型
1.?It?+?動詞?+形容詞/名詞/過去分詞/不及物動+主語從句?It?is?uncertain?whether?he?can?cme?back?r?nt.?
這類不及物動詞有: appear,?happen,?seem等。
It?is?a?questin that whether?he?will?cme.?
這類名詞有a pleasure, a fact, a pity, a shame, an hnur, a questin等。
這類名詞有annunced, believed, said, reprted, expected, hped, decided, shwn等。
It?is?reprted?that?16?peple?were?killed?in?the?fld.
It?seemed?that?he?didn’t?tell?the?truth.?
2.?It?+?be?+?adj./n. +?(fr sb.) +?t d sth.
It’s?necessary?fr?the?yung?t?learn Chinese well.It is time fr yu t g t bed.
此處形容詞是描述事物的特性。用于此句型的形容詞有: easy, hard, difficult, pssible, bad, gd, imprtant, necessary, exciting, interesting等。
3.?It?+?be?+?adj. +?f sb. +?t d sth.
It’s?wise f Linda t make up her mind t t learn an instrument.?
這個句型是易丟分句型,此處形容詞是描述人的品德、特征。用于此句型的形容詞有:kind, nice, wise, plite, friendly, flish, clever, rude, implite, cruel等。
4.? It?+?takes?(?sb?)+?時間(金錢)+ t d sth.
It?tk?the?wrkers?three?years?t?finish?building?the twer.?
( ) 1.?In?fact ____ is?a?hard?jb?fr?the?plice?t?keep?rder? in?an?imprtant?ftball?match.? A.?this? B.?that? C.?there ?D.?it? ( ) 2. ____ is a fact?that?English?is?being?accepted?as?an? internatinal?language.? A.?There? B.?This? C.?That? D.?It?
一、選擇最佳答案填空。
( ) 3.?Is ___ necessary?t?take?ff?ur?shes?when?we?enter?the?lab? A.?everyne? B.?this? C.?her? D.?it?( ) 4.?____?will?take?yu?a?lt?f?time?t?find?him?in?the crwd.? A.?It? B.?I? C.?We? D.?They?( ) 5.?It?is?n?use?____?there,?the?situatin?is?hpeless?nw.?? A.?t?g? B.?t?be?ging?? C.?ging? D.?having?gne
( ) ?7.?It?is?never?t?late?t?learn,?____?? ? A.?is?it? B.?isn’t?it?C.?des?it? D.?desn’t?it? ( ) 8.?___?is?knwn?t?all?that?Shenzhu?VI?launched?successfully.?? A.?As B.?What? C.?It? D.?That?( ) 9.?____ is?reprted?in?the?newspaper,?the?Earthquake in?East? ?China's?Jiangxi?Prvince?killed?13?peple.? A.?It? B.?As? C.?That? D.?What?
1. 細嚼慢咽是個好習慣。______ _____ a gd habit ____ ______ slwly.2. 我其中一個計劃是明年在廣州買一套房子。One f my plans _____ _____ _____ a flat in Guangzhu next year.3. 他們花了九年的時間建成港珠澳大橋。____ ______ them nine years ___ ______ the Hng Kng-Zhuhai-Macau Bridge.4. 在一天之內(nèi)收集那么多書是不可能的。___ ___ impssible ____ _______ s many bks in ne day.
It is t eat
is t buy
It tk t built
二、根據(jù)中文意思完成句子
It is t cllect
Finish Grammar exercise paper.
Nature will nt deceive us. It is ften urselves wh deceive us.
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