八年級英語語法復習if賓語從句和條件狀語從句課件(1(精)

1、Grammar7if（如果）弓 I語法 1：正確使用十 hatif/whether （是否）；who, why 等疑問詞引導的賓語從句。語法 2 導的條件狀語從句豹什么是賓語從句？在復合句中做賓語成分的句子叫賓語從句。豹賓語從句的分類、引導詞和語序原句式引導詞從句語序陳述句that不變一般 疑問句whether/if改為陳述句語序特殊 疑問句特殊 疑問詞改為陳述句語序倉賓語從句的時態(tài)主句從句一般 現在時保留原來句子的時態(tài) 或根據實際情況而定一般 過去時一般現在時 f 一般過去時 現在進行時 f 過去進行時 般將來時 f 過去將來時 現在完成時 f過去完成時任一時態(tài)若表客觀事實、普遍真理及自然現

2、象用 乞帶：一般現在時注：that A句中無詞匯意義，在從句中不能充當成分, 在 o 語當中往往石略巳 g g 1.I har （that） he will be back in an hour （一小時后他會回來）2.He said （that） he missed us very much.（他非常想念我們）3 The teacher told us （that） the eailh moves around the sun（地球圍著太陽轉）注意：當從句是客觀真理的時候，無論主句什么時態(tài)，從句一律用一般現在時由從屬連詞whether, if引導的賓語從句e.g.e.g.1.1 want t

3、o know if （whether） he will go to the park with us（他是否跟我們一起去公園）2 Ask him 衛(wèi) heiher_（iO_hexan_came （他是否能來）3 I dont know whether it isto rain or noK 是否要下雨）當句末為 o onotnot 時，弓 I I 導詞只能用 whethewhethe而不能用 if.if.If與whether的區(qū)別1.I dont know_ he will come or not.與 or not 連用只能用 whether2.I dont care of_ he is ha

4、ndsome.介詞后只能用 whether3 He wondered_to stay here the next week.與 to do 不定式連用只能用 whether4 _ he will come is not decided 作主語只能用 whether由連接代詞what, whom, whose, which, what及連接 副詞when, where, how, why引導的賓語從句|1. Hewho could answeZhe quEio*鍛能回箱這個問題）2. Do von know whom they are waiting for .（砲們農孑誰）3. He aske

5、d whose handwritin 只 was the best in the class_.（誰的有決是班上最好的）4 PT 訶 1 me when we ll Zve a noting （我幻什么對候開會）5. Can you tell me 缺“ he is .（他衣呷兒）6. Could you tell me ho 1 can 供 t to the statipii（我該怎么去車北）7. Would you tell me *hy the trnin is late （為什么大車遲時 了）把下列句子連成帶賓從的復合句：1.You sucked your finger again.

6、(I hear .)I hear that you sucked your finger again.2. They will go shopping tomorrow.(He told me.).He told me that they would go shopping tomorrow.3. Whose bike is this? (Does anyone know.)Does anyone know whose bike this is?4. Who went fishing yesterday?(He asked.)He asked who went fishing yesterda

7、y. 5. How old is he ?( She doesnt know.)She doesnt know how old he is. 6. Has he returned to America?(l want to know.)I want to know if he has returned to America 7. Can Mike drive a car?(Could you tell us.)Could you tell us if Mike can drive a car? 8.Did Alice work out the problem by herself?(Pleas

8、e tell me.)Please tell me if Alice worked out the problem by herself.if （如果）引導的條件狀語從句:用法:1.1.如果主句是祈使句，從句要用一般現在時 C CDont go and play football if you dont finishyour homeworkPlease call me if he comes next Sunday.2.2.如果主句是一般將來時，ifif 從句則用一般現在時。If i十rains（從句）,I will stay at home.Ill go with you if you d

9、ont want to go alone（從句）3 3如果主句含有 must,must, may,may, c c；i i 等情態(tài)動 詞，ifif 從句也要用一般現在時。If you drive too fast, you cna have anacciden十.遽篦You must stop if the traffic is red Complete the sentences.1f you want (want) to listen to music,choose (choose)a CD.2f you huy(buy) a new camera, get (get) a good on

10、e.3.If the lightdoesrYt come(not come) on, wait (wait) forone minute.4.If it does nt worj(not work) , wait- (wait) a minute andthen try (try) again.5.If you dont know (not know) howTo use the camera,(read) the instructionsFill in the blankets with the proper form1.IfItrains(rain) tomorrow, Iwillsta(

11、stav) athome.2.You maypass(pass) the exam ifyoustudy(study) hard 3 I you want to record, Press(press) the redlight.4.He asked us if everybodywas(be) here Have a try用扌舌號內所給詞的正確形式填空1 .If the rain stops (stop) tonight, we will go to the cinema.2ll buy a computer if I have (have) enough money.3.You wont qet (not get) nervous if you do (do ) enoughexercise.4f she is (be) kind to me , I wont argue (not argue) with her.5want to know if he will come (come) to