If引導(dǎo)的條件狀語(yǔ)從句課件

If引導(dǎo)的條件狀語(yǔ)從句大慶市第51中學(xué)

賀東輝If在狀語(yǔ)從句中的位置If引導(dǎo)的條件狀語(yǔ)從句，如下列的例子：1)

Ifyouknowtheanswer,pleasetellme.2)

Iftheycomehere,wewillpickthemup.3)

Shewillsendmeanemail

ifInoticeher.*

由此可以看出，if引導(dǎo)的句子放在句首，后面的句子連接中用“，”

.如果放在句子當(dāng)中，兩個(gè)連接的句子不需要加“，”.eg:1)如果你看見Tom,請(qǐng)立刻通知我。2)如果比賽結(jié)束了，請(qǐng)給我打電話。1)IfyouseeTom,pleasenoticemeatonce.1)PleasenoticemeatonceifyouseeTom.2)Ifthegameisover,pleasecallme.2)Pleasecallmeifthegameisover.exercise：句子改寫1)

WewillgotoHarbinifitisfinetomorrow.*Ifitisfinetomorrow,wewillgotoHarbin2)Ifhehasthebook,pleaseletmeknow.*

Pleaseletmeknowifhehasthebook.3)Iftheycomehere,wewillbehappy.*

Wewillbehappyiftheycomehere4)Katewillwatchamovieifsheisfree.*IfKateisfree,shewillwatchamovie.*

question:if在狀語(yǔ)從句中的位置是怎樣的呢主從句的區(qū)分Eg:1)

Iwillbringanumbrella

ifitrainsoutside.2)

Ifthecarisred,Iwillbuytwo.3)

Ifthegroundisdry,wewillplayfootballthisafternoon.*上述句子中，我們把if后面引導(dǎo)的句子叫做從句，句子的另外一部分叫做主句。If叫引導(dǎo)詞。判斷下列句子中的主句和從句1)

Ifyouhaveenoughmoney,wewillbuyacar.2)

IfKateisangry,Tomwillbeveryscared.3)

Wewilllaughathim

ifhegetspoorscore.4)

Pleasegohome

ifyouhaveanyproblem.5)

Turnleft

ifyouseetheredstone.*1)從+主

2）從+主

3）主+從

4）主+從5）主+從Question:if引導(dǎo)的句子叫什么？另外一部分叫什么？If引導(dǎo)的條件狀語(yǔ)從句

11.

IfyouseeTom,pleasetellhimthenews.2.

IfIcan’tgothere,pleasechooseanotherone.3.

Handinyourpaper

iftimeisup.4.

Gobackrightnow

ifyoufeeltired.Question:

這幾個(gè)if引導(dǎo)的條件狀語(yǔ)從句有什么特點(diǎn)？If引導(dǎo)的狀語(yǔ)從句之祈使句?

上述的例子概況為If+從句+主句（祈使句）主句（祈使句）+if+從句或者即：在主句和從句都是一般現(xiàn)在時(shí)態(tài)的情況下，主句用祈使句，從句用一般現(xiàn)在時(shí)

。Eg:1)

Passmetherulerifyou

arefree.2)

Ifthecar

ischeap,buyme2.Choosethebestanswer1.

IfMary____(want)toeatsth,_____(give)heratonce.A.

want,give

B.wants,giveC.

wants,gives

D.want,gives2.IfTony___(have)time,____(go)shoppingwithhim.A.have,go

B.has,go

C.has,goesD.have,goes3.__(remember)allthewordsifhe___(find)thebook.A.Remember,find

B.Remembers,findsC.Remembers,find

D.

Remember,findsFillintheblank1.

IfIcan’t__ge_t_(get)upontime,_____(call)callmeplease.2.

IfKate__is____(be)singing,_n_ot_ic_e_(notice)hertogetdownatonce.3.

Ifshe_k_no_w_s_(know)theanswer,_c_o_py__(copy)meone.4.

__C_ut___(cut)thewatermelonifalltheguests______(be)ready.are5.

______(turn)offthelightifshe____(go)Turngoesout.If引導(dǎo)的狀語(yǔ)從句之

主將從現(xiàn)看下面的句子,If

youcancomehere,

bringmeabook.表示的是一種可能的情況。在這個(gè)句子中，主句用祈使句，從句用一般現(xiàn)在時(shí)態(tài)?？墒侨绻渥诱f(shuō)，“如果你不能來(lái)，我會(huì)自己去取”，該怎么表達(dá)呢？*

Ifyoucan’tcomehere

,Iwillbringitmyself.像這種從句用一般現(xiàn)在時(shí)，主句用將來(lái)時(shí)態(tài)的句子，就是if引導(dǎo)的第二種條件狀語(yǔ)的情況，簡(jiǎn)稱

“主將從現(xiàn)”。Eg:1)

Ifyoutellmethetruth,I

willbecrazy.2)

Ifshecomeshere,I

willhavelunchwithher.3)

Wewilltakeyouhomeifourcar

isworking.4)

Hewillsmokeifthere

isnobody.Choosethebestanswer.1.

IfMary____(fly)toShanghai,she____(see)myuncle.A.fly

，willsee

B.flies,willsee

C.willfly,sees,D.flies,see2.IfTom____(open)thebox,father____(be)angry.A.opens,willbe

B.willopen,be

C.opens,is

D.willopen,willbe3.Daming____(cook)themealhimselfifmum____(be)notathome.A.

cook,is

B.willcook,willbe

C.willcook,isD.cook,willbeFillintheblank1.

IfI__se_e____(see)them,I_w_i_ll_te_l_l

_(tell)themtheresult.snowswillgo2.

Ifit________

(snow),we_______(go)skating.willplayis3.

Tony_______(play)footballifit_______(be)notcold.willget4.

We_______(get)thefirstplaceifnobody________(catch)us.catcheswillwin5.

They__________(win)ifthegameis________(be)over.Question:什么叫“主將從現(xiàn)”？主將從現(xiàn)練習(xí)1.

IfI____(have)enoughmoney,I_____(buy)anicecar.A.have,buy

B.willhave,willbuy

C.willhave,buy.

D.have,willbuy.2.

Ifshe_____(read)thenotice,she______(notmake)themistake.A.read,doesn’tmake

B.willread,won’tmakeC.willread,won’tmake

D.reads,won’tmake3.

Mary_____(notgo)thereifnobody_____(tell)hertheaddress.A.doesn’tgo,tells.

B.won’tgo,tellsC.doesn’tgo,willtell

D.won’tgo,tell改錯(cuò)1.

Iftheyknowtheanswer,theytellmehowtodo.2.

Iwillcookmyselfifshewillgoout.3.

WewillflytoShanghaiifthedaywasfine.4.

Mikewillgohomeifthereisnothomework.5.

Shecopiesitagainifthebossgoesback.6.

Davidwilleatalotofwatermelonsifhefeelhungry.?

1.willtell

2.goes

3.is

4.no

5.willcopy?

6.feelstranslation1.

如果你看到Tom，你就會(huì)知道真相了。2.

如果有人跟我撒謊，我就揍他。3.

如果你飛到月球上，你就會(huì)看到藍(lán)色的地球。4.

如果你在倫敦，你就會(huì)看奧運(yùn)會(huì)了。5.

如果你能早點(diǎn)到，我們就不會(huì)錯(cuò)過(guò)火車