be動(dòng)詞、助動(dòng)詞、情態(tài)動(dòng)詞講解(基礎(chǔ)篇)第一講6頁

1、be動(dòng)詞、助動(dòng)詞、情態(tài)動(dòng)詞講解 (基礎(chǔ)篇)1、be動(dòng)詞的用法。beam / isare現(xiàn)在時(shí)waswere過去時(shí)單數(shù)復(fù)數(shù)英語中，be動(dòng)詞選用單數(shù)還是復(fù)數(shù)，要由主語來定，主語是單數(shù)，就用單數(shù)，反之用復(fù)數(shù)。 句中含有be動(dòng)詞時(shí)：肯定句： 主語be 其他否定句： 主語 be not 其他一般疑問句： Be 主語其他 ？ 特殊疑問句： 疑問詞（what / who / when / where） be 主語 其他 ？I am a teacher. You are right. She is 16 years old. My father is at home. The students are pla

2、ying games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. be動(dòng)詞用法歌：我用am，你用are，is 連接他她它。 單數(shù)名詞用is，復(fù)數(shù)名詞全用are。變疑問，往前提，句末問號(hào)莫丟棄； 變否定，更容易，be后not莫忘記；疑問否定任你變，句首大寫莫遲疑。 be動(dòng)詞作謂語，它后面一般跟名詞、形容詞或介詞短語。 她個(gè)子很高。 她在教室里。 她是一個(gè)高個(gè)子的女孩。2、助動(dòng)詞的用法。英語句子按正常語序是“什么人或事物” + “做什么”，即，我們常

3、說的“主語 + 謂語 + 其他”。 主語為I 或復(fù)數(shù)名詞、代詞時(shí)：肯定句： I / We / They / The students 動(dòng)詞原形 其他 。 We watch TV every night.變否定： 主語 dont 動(dòng)詞原形 其他 。 We dont watch TV every night.一般疑問句 Do + 主語 + 動(dòng)詞原形 + 其他 + ？ Do you watch TV every night? Yes, we do. / No, we dont.特殊疑問句：疑問詞 + do + 主語 + 動(dòng)詞原形 + 其他 + ？ How often do you watch TV?

4、 主語為單數(shù)名詞或代詞時(shí)：肯定句： 主語 + 動(dòng)詞第三人稱單數(shù)形式 + 其他 + 。 He watches TV every night.否定句： 主語+ doesnt+動(dòng)詞原形+其他+。 He doesnt watch TV every night.一般疑問句：Does + 主語 + 動(dòng)詞原形 + 其他 + ？ Does he watch TV every night? Yes, he does. / No, he doesnt.特殊疑問句：疑問詞 + does + 主語 + 動(dòng)詞原形 + 其他 + ？How often does he watch TV? 主語為單數(shù)或不可數(shù)名詞，謂語要用單

5、數(shù)第三人稱，反過來，看見動(dòng)詞用了單數(shù)第三人稱，可以推知主語是單數(shù)或不可數(shù)名詞。 ( )1. How _ your dad help at home? A. do B. does C. is ( )2. _ goes bad easily in summer. A. Milk B. Apples C. Cakes 過去時(shí)的句式（當(dāng)句子時(shí)態(tài)為過去時(shí)時(shí)， 動(dòng)詞用過去式，不受主語單復(fù)數(shù)的影響）肯定句： 主語 + 過去式 + 其他 + 。 He / We got up early every morning last year.否定句： 主語 + didnt + 動(dòng)詞原形 + 其他 + 。 He / W

6、e didnt get up early every morning last year.一般疑問句： Did + 主語 + 動(dòng)詞原形 + 其他 + ？ Did he / you get up early every morning last year? Yes, he / we did. / No, he / we didnt.特殊疑問句： 疑問詞 + did + 主語 + 動(dòng)詞原形 + 其他 + ? When did he / you get up every morning last year? 初中階段，助動(dòng)詞一般只出現(xiàn)在否定句或疑問句中，助動(dòng)詞用在肯定句中表示強(qiáng)調(diào)。 3、情態(tài)動(dòng)詞的用

7、法。 情態(tài)動(dòng)詞表示說話人的語氣或情態(tài)。初中英語中，常見的情態(tài)動(dòng)詞有：can (could), may (might), should, must, will (would), ought to, have to, need等。 情態(tài)動(dòng)詞的共同點(diǎn)：不受主語單復(fù)數(shù)的影響；情態(tài)動(dòng)詞后用動(dòng)詞原形。情態(tài)動(dòng)詞和動(dòng)詞原形共同構(gòu)成謂語部分。 肯定句： 主語 + 情態(tài)動(dòng)詞 + 動(dòng)詞原形 + 其他 + 。 She / They can swim well.否定句： 主語 + 情態(tài)動(dòng)詞 + not + 動(dòng)詞原形 + 其他 + 。 She / They can not swim well.一般疑問句： 情態(tài)動(dòng)詞 +

8、主語 + 動(dòng)詞原形 + 其他 + ？ Can she / they swim well? Yes, she / they can. / No, she / they cant.特殊疑問句： 疑問詞 + 情態(tài)動(dòng)詞 + 主語 + 動(dòng)詞原形 + 其他 + ? Why can she / they swim well? Who can swim well?練習(xí)選擇填空：1. Mybrother_ a teacher. He _ his pupils very much. A. is, like B. is, likes C. are, likes D. are, like2. A: How many

9、days _ there in a week? B: There _ seven. A. is, is B. are, are C. is, are D. are, is3. The boy _ ill today. A. are B. is C. be D. am4. What _ your father _? A. do, likeB. is, likeC. are, likesD. does, like5. _ you go to school by bus?A. AreB. IsC. DoD. Does6. When _ your birthday?A. areB. isC. doD.

10、 does7. Which _ bigger, the sun or the moon? A. are B. is C. Be D. 8. My teacher often _ shopping on Sundays.A. goesB. gosC. goD. goed9.Listen! The children_.A. singsB. are singingC. is singingD. is sing10. Her voice _ like my mothers. A. sounds B. sound C. looks D. look11. It often rains and the cr

11、ops _ fast. A. get B. turn C. grow D. become12. A: How are you _ now? B: Much better, thank you. A. getting B. feeling C. making D. turning13. He _ swimming.A. dont likesB. doesnt likesC. not likeD. doesnt like14. What _ they _ on Saturdays?A. does, doesB. do, doC. do, doesD. does, do15. Yang Ling_d

12、o exercise with_. A. doesnt, usB. dont, weC. /, usD. dont, usI.填入適當(dāng)?shù)闹^語動(dòng)詞1.I_aboy._you aboy?No,I_ not.2.Thegirl _Jackssister. 3.Thedog_tallandfat. 4.Themanwithbigeyes_ateacher. 5._yourbrotherintheclassroom? 6.Where_yourmother?She_athome.7.How_yourfather? 8.MikeandLiuTao_atschool. 9.Whosedress_this? 1

13、0.Whosesocks_they? 11.That_myredskirt. 12.Who_I? 13. The jeans_onthedesk. 14. Here_ascarfforyou. 15.Here_somesweatersforyou. 16.Theblackgloves_forSuYang.17.Thispairofgloves_forJim.18. Physics _ my favorite subject.19. The police _ running after the thief.20. Our class _ going to the zoo. 將下列句子奇數(shù)變成否定

14、句，偶數(shù)變疑問句。1. I like music. 2. He walks to school.3. They often have English on Monday. 4. The boys are swimming in the river.5. She smiles happily. 6. Mary went to the zoo last week.7. The workers made many cars in the factory.8. We should protect the innocent. 9. Her parents fly to London twice a month.10. All my classmates climbed the Tai Mount last autumn.11. The teacher asks us to clean the classroom.12. He will go