致学生
致老师
单元号
1 am/is/are
2 am/is/are(疑问句)
3 I am doing (现在进行时)
4 are you doing?(同在进行时的疑问式)
5 I do/word/like等(一般现在时)
6 I don’t(一般现在时的疑问式)
7 Do you……?(一般现在时的疑问式)
8 I am doing(现在进行时)与I do(一般现在时)比较
9 I have……/I’ve got
10 was/were
11 worked/got/went等(一般过去时)
12 I didn't……Did you……?(一般过去时的否定式与疑问式)
13 I was doing(过去进行时)
14 I was doing(过去进行时)与I did(一般过去时)比较
15 I have done(现在完成时)
16 I've just…… I’ve already I haven’…yet(现在完成时2)
17 Have you ever?(现在完成时3)
18 How long have you…?(现在完成时4)
19 for since ago
20 I have done(现在完成时)与I did(一般过去时)比较
……
附录