新版外研初中英語 主將從現(xiàn)詳細(xì)講解與練習(xí)

1、主將從現(xiàn)定義：主將從現(xiàn)是指在時間狀語從句 和條件狀語從句中，如果主句是一般將來時，從句用一般現(xiàn)在時替代一般將來時。 引導(dǎo)條件狀語從句的詞if :If you ask him, he will help you. unless :Ill go there tomorrow unless it rains. 引導(dǎo)時間狀語從句的詞when , while , before , after , untill , till , since , as soon as ,1.主將從現(xiàn)主句是一般將來時，從句用一般現(xiàn)在時。When I grow up, Ill be a doctor.If you go to

2、the party, you will be happy.l 2.主祈從現(xiàn)主句是祈使句，從句用一般現(xiàn)在時。 Dont laugh at me when I make a mistake.Put it in your diary before you forget. 用記事本記下免得忘了。l 3.主情從現(xiàn)主句中含有情態(tài)動詞，從句用一般現(xiàn)在時。 You should be quiet when you are in the reading room.A baby deer can stand as soon as its born. 小鹿一生下來就能站著。You can get a better

3、job if you speak a foreign language. 要是你會說一種外語，那你就會找到更好的工作。通常出現(xiàn)情況1. “主將從現(xiàn)”見于時間狀語從句As soon as I get through with my work Ill join you. 我工作一做完就來找你們。Before they drive any of the buses, they will have to pass a special test. 然而在駕駛公共汽車前,他們必須通過專門測驗。My mother will be very angry with me when she finds out w

4、here Ive been. 我母親要是知道我到過那地方一定會大怒。Well pay you half up front and the other half when youve finished the job. 我們先付給你一半錢，剩下的一半等你干完了再付。2. “主將從現(xiàn)”見于條件狀語從句If (it is) necessary I will come at 6. 如有必要，我6點鐘來。If today is Wednesday, the day after tomorrow will be Friday. 今天要是星期三，后天就是星期五。If you train hard, youl

5、l make a good footballer. 你要刻苦訓(xùn)練就能成為優(yōu)秀的足球運動員。If past experience is anything to go by, the plane will be late. 過去的經(jīng)驗要是還靠得住的話，這飛機會晚點的3. “主將從現(xiàn)”見于讓步狀語從句Well go even if it rains. 即使下雨我們也去。Hell come even if hes i11. 他即使生病也會來。Even if he had the money, he wouldnt buy it. 他即使有錢也不會買它。Hell probably say no, tho

6、ugh its worth trying. 他很可能不同意，但不妨去試探一下【Exercise 】1. If I come, I _ ( see ) you. 2. If it is fine, we_( go ) for a walk. 3. If it rains, they _ ( stay ) at home. 4. You will spoil it if you _ ( not be ) careful. 5. We will be very much pleased if you _( come ).6. Will you help me if I _ ( need ) you.

7、 7. They will get wet if it _ ( rain ).8. We will answer if we _( can ). 9. If you eat too much, you _( get ) ill. ( ) 10. -What will Bill do if he _in the test?-He will try again.A. fail B. fails . will fail D. is failing( ) 11. Please tell her the news when she_. OK, I will.A. comes B. will come.

8、C. come D. would come( ) 12. The students will plant trees if it _ tomorrow.A. didnt rain B. hasnt rained C. wont rain D. doesnt rain( ) 13. We_ home if there is no bus. -Oh, what a pity!A. will walk B. have walked C. walked D. walk( ) 14 .If it _ tomorrow, Ill go by car.A. rain B. will rain C. rain

9、s D. would rain( ) 15.If Mary_next Sunday, we will go boating together.A. will come B. comes C. shall come D. shouldcome( ) 16. - Dont forget to ask him to write to me. - I wont. As soon as he_, Ill ask him to write to you.A. will come B. came C. comes D. is coming( )17. - Can I go to Beijing for my

10、 holiday, Dad?- You can when you _ a bit older.A. will get B. get C. are getting D. got( )18. If he _harder, he will catch up with us soon. A. study B. studies C. will study D. studied( )19. Frank _to see his grandma if he _ free tomorrow.A. will come; will be B. comes; is C. will come; is D. comes;

11、 will be【拓展練習(xí)】（ ）1. If you want to learn English well, you must use it as _ as possible.A. often B. long C. many D. soon（ ）2. -What will Bill do if he _in the test? -He will try again.A. fail B. fails C. will fail D. is failing ( ) 3. Please tell her the news when she_. OK, I will. A. comes B. will

12、come. C. come D. would come( ) 4. The students will plant trees if it _ tomorrow.A. didnt rain B. hasnt rained C. wont rain D. doesnt rain( ) 5. We_ home if there is no bus. -Oh, what a pity!A. will walk B. have walked C. walked D. walk( ) 6 . If it _ tomorrow, Ill go by car. A. rain B. will rain C.

13、 rains D. would rain( ) 7. If Mary _ next Sunday, we will go boating together. A. will come B. comes C. shall come D. should come( )8. - Dont forget to ask him toto me. - I wont. As soon as he _, Ill ask him toto you. A. will come B. came C. comes D. is coming ( )9. - _ the young girl _ the old man

14、clean his room every day? - Yes, she does. A. Does; help B. Has; helped C. Did; help D. Do; helps( )10. - What does Linda often do in the evening? - She often _ her homework, but on the evening of March 12 she _ TV.A. does; watches B. is doing; watched C. does; watched D. is doing; was watching( )11

15、. Our geography teacher told us yesterday that the earth _ around the sun. A. was moving B. moved C. has moved D. moves ( )12. - Do you likesilk dress? - Yes, I do. It _ so soft and comfortable. A. is feeling B. feels C. has felt D. is felt ( )13. - Can I go to Beijing for my holiday, Dad? - You can

16、 when you _ a bit older. A. willnbsp; B.nbsp; C. are getting D. got( )14. If he _harder, he will catch up with us soon. A. study B. studies C. will study D. studied( )15. Frank _ to see his grandma if he _ free tomorrow. A. will come; will be B. comes; is C. will come; is D. comes; will be( ) 16. When will you tell him the good news? -I will tell him about it as soon as he _ back. A. comes B. came C. will come D. is coming( ) 17. _ me carefully, boys and girls. Can you _ me? A. Listen to; hear B. Hear;