1 When do I use full stops andwhen do I use commas？句号和逗号的用法
2 When must I use I？I的用法
3 When can I use an apostrophe before s（''''s）？什么时候在''''s面加撇号？
Test 1
4 Do I need a in this sentence？这句话中需要a吗？
5 A orthe？ a还是the？
B Do I need thein this sentence？这句话中需要the吗？
Test 2
7 How do I talk about age？如何表达年龄？
8 How do I say the time and the date？如何表达时间和日期？
9 When do I add s to verbs？动词的一般现在时形式
Test 3
10 When do I add ed to verbs？动词的二般过去时形式
11 I did or I have done？一般过去时和现在完成时
12 Forand since for和since的用法
Test 4
13 When do I use I am doing？现在进行时
14 When do I use I will？will的用法
15 How do I form questions？疑问句是如何形成的？
Test 5
16 There and if／they there和it／they
17 Plural and uncountable nouns名词的复数形式和不可数名词
18 When do I use much and many？much和many的用法
Test 6
19 Like,would like and want like,would like,want
20 Do or to do？ do还是to do？
21 When do I use doingafter verbs？哪些动词后面接动词的-ing形式？
Test 7
22 Other,others，another and each other other,others,another和each other
23 one and ones，one and ones
24 Old,older,the oldest old,older,the oldest
Test 8
25 When do I use capital letters with people and places？在什么情况下人名和地名的单词首字母要大写？
26 How do I use at and in with places？如何用at and in表示地点？
27 How do I use by and in／on with means of transport？如何用in／on表示交通方式？
Test 9
28 When do I use at,in and on with time expressions？如何用at,in和on表达时间？
29 How do I use from about and of？from，about和of的用法
30 Do I need for in this sentence？for的用法
Test 10
Answer key
