1 When do I use full stops and when do I use commas? 句号和逗号的用法 5
2 When must I use I? I的用法 6
3 When can I use an apostrophe before s s? 什么时候在-s前面加撇号？7
Test 1 8
4 Do I need a in this sentence? 这句话中需要a吗？10
5 A or the? a还是the？11
6 Do I need the in this sentence? 这句话中需要the吗？12
Test 2 13
7 How do I talk about age? 如何表达年龄？15
8 How do I say the time and the date? 如何表达时间和日期？16
9 When do I add s to verbs? 动词的一般现在时形式 17
Test 3 18
10 When do I add ed to verbs? 动词的一般过去时形式 20
11 I did or I have done? 一般过去时和现在完成时 21
12 For and since for和since的用法 22
Test 4 23
13 When do I use I am doing? 现在进行时 25
14 When do I use I will? will的用法 26
15 How do I form questions? 疑问句是如何形成的？ 27
Test 5 28
16 There and itthey there和itthey 30
17 Plural and uncountable nouns名词的复数形式和不可数名词 31
18 When do I use much and many? much和many的用法 32
Test 6 33
19 Like, would like and want like, would like和want 35
20 Do or to do? do还是to do？ 36
21 When do I use doing after verbs? 哪些动词后面接动词的-ing形式？ 37
Test 7 38
22 Other, others, another and each other other, others, another和each other 40
23 One and ones one和ones 41
24 Old, older, the oldest old, older, the oldest 42
Test 8 43
25 When do I use capital letters with people and places? 45
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? 46
如何用at和in表示地点？
27 How do I use by and inon with means of transport? 47
如何用by和inon表示交通方式？
Test 9 48
28 When do I use at, in and on with time expressions? 50
如何用at, in和on表达时间？
29 How do I use from, about and of? 51
from, about和of的用法
30 Do I need for in this sentence? 52
for的用法
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