be动词 助动词、情态动词用法

句型转换
1. They are doing housework .(分别改成一般疑问句和否定句) Are they doing housework? Yes, they are. / No, they aren’t. They aren’t doing housework.
2．The students are cleaning the classroom . ( 改一般疑问句并作肯定 和否定回答) Are the students cleaning the classroom? Yes, they are./ No, they aren’t.
be动词的在一般现在时中的各种句型 1）肯定句： 主语 + be + 其他成分
She is beautiful. 2）否定句： 主语 + be + not + 其他成分
She is not beautiful. 3）一般疑问句（用yes或no来回答）：be + 主语 +其他成分 + ？
Is she beautiful？ 4）特殊疑问句： 疑问词 + be + 主语（其他成分）+ ？
3. Tom is under the tree.（变为否定句） Tom is not under the tree.
4. The skateboards are black.(改成否定句) The skateboards are not black.
专题二：
Be动词、助动词和情态动词
Be动词~
• 一般现在时中be动词的用法 be
am
is
are
• （1）am用在I后
I am a student.
I'm happy.
• （2）are用于复数主语和第二人称单数（你，您）等情况
Are you Chinese?
They are basketball players.
What's your name?
Who's that?
be的用法口诀： 我用am，你用are, is跟着他、她、它。 单数is，复数are，勿忘be的三变化。 变疑问，往前提，句末问号莫丢弃。 变否定，更容易，be后not莫忘记。 疑问否定任你变，句首大写莫迟疑。
一般现在时中be动词的用法相对简单，上面的口诀基本包括了be动 词的各种问题。
first of June. It _w__as__ Children’s Day. All the students __w_e_re__ very excited. • The sky is blue. • I ama boy. • There ___is_____(be) some water in the bottle.
• I __a_m___ an English teacher now. • They ___ar_e___ glad to see each other . • Helen and Nancy ___a_r_e___ good friends. • The little dog __is___ two years old this year. • Look, there ___a_re____ lots of grapes here. • There __i_s_____ a sign on the chair on Monday. • Today _i_s___ the second of June. Yesterday __w_a_s__ the
• 16. The black gloves __a_r_e__ for Su Yang. • 17. This pair of gloves ___is___ for Yang Ling. • 18. The two cups of milk _a_re___ for me. • 19. Some tea ___is___ in the glass. • 20. Gao shan's shirt __i_s____ over there. • 21. My sister's name __is____Nancy. • 22. This ___is___ not Wang Fang's pencil. • 23. ___A_re__ David and Helen from England? • 24. There ___is___ a girl in the room. • 25. There ___a_r_e_ some apples on the tree. • 26. _A_r_e____ there any kites in the classroom? • 27. _I_s_____ there any apple juice in the bottle? • 28. There ____i_s__ some bread on the plate. • 29. There __a_r_e___ a boy, two girls, three men and ten women in the park. • 30. You, he and I ___a_re__ from China.
用am/is/are填空 1、She（ ）a student. 2、His jacket （ ）on the table. 3、We （ ）family. 4、-How （ ）you?
-I （ ）fine, thanks. 5、Jack and I （ ）good friends. 6、（ ）she a student? 7、（ ）you a teacher?
The books are expensive.
பைடு நூலகம்
（3）is用在主语是第三人称单数或不可数名词等情况 He is my friend. The dog is yellow. Time is money.
be动词的缩写形式 I am = I'm he/she/it is = he's/she's/it's we/you/they are = we're/you're/they're is not = isn't are not = aren't who is = who's what is = what's