为你解答.
1、The English class ends at five o'clock（换同义句）
2.The English class （is over） at five o'clock. (这是第一题的同义句)
3.I have （3） new pens (对画线部分提问）
(How many) new pens do you have?
4.I have (3) kilos of milk (对画线部分提问）
(How many) kilos of milk do you have?
5.询问原因与结果：英语中用（why,为什么）询问原因,回答用（becasue,因为）.
6.What do you think of the shoes?(同义句转换）How （do） you （like） the shoes?
7.I must go home today (同义句转换) I (have to) go home today
8.Why not go to the zoo on Sunday?（同义句） Why (dont' you) go to the zoo on Sunday?
9.Susan has a music class (every Wednesday?)（对划线提问）.
(How often does) Susan (have) a music class?
10.Linda likes history best(用 not……at all改写） Linda (doesn't like) history at all.
11.His brother does his homework on Saturday (改为否定句）
His brother (doesn't do) his homework on Saturday
12.The boy ofen plays soccer onthe playground after school(用now改写）
The boy (is playing) soccer on the playground now.
13.What class are they having?(用politics作答） They (are having) a politics class.
14.She often goes to bed (at 9:30) (对画线部分提问）
(What time does) she go to bed? (When does) she go to bed?
15.Why not go swimming?（同义句） (Shall we) go swimming?
16.What do you think of your school? (同义句） (How) do you (like) your school?
17.She likes English best . （同义句） English is (her favourite subject).
18.表示时间的介词：at+(时刻);on+（日期）;in+（年月周日）Eg; （in) February; (on) school days; (at) about 9o'clock
19. 学习询问对方看法的特殊疑问句.如：What do you think (of sth)?
谈论兴趣与爱好.如：What's your favourite ~?
询问原因与结果.如: Why do you ...?
20.She often gets to school (at about 7:30 a.m)(对划线部分提问）
(When does) she get to school?
21.A week has seven days.(改为同义句） (There are) seven days (in) a week
22.There is some water in the cup.(改为否定句） There (isn't any) water in the cup.