Welcome! 1
1 Yes/No questions 2
2 Wh-questions 4
3 The past: What happened? The present perfect: What has happened? 6
4 The past continuous: What was happening? The present perfect continuous: What has been happening? 8
5 Past, present, and future 10
6 Quantity 12
7 Articles-Ⅰ 14
8 Articles-Ⅱ 16
9 Comparison 18
10 Requests and obligation 20
11 Ability 22
12 Advice and suggestions 24
13 Doing or to do?-Ⅰ 26
14 Doing or to do?-Ⅱ 28
15 Prepositions-Ⅰ 30
16 Prepositions-Ⅱ 32
17 The future 34
18 Possibility and probability 36
19 Verbs + prepositions 38
20 Phrasal verbs 40
21 If... sentences-Ⅰ 42
22 If... sentences-Ⅱ 44
23 The passive-Ⅰ 46
24 The passive-Ⅱ 48
25 Prepositional phrases-Ⅰ 50
26 Prepositional phrases-Ⅱ 52
27 Reported speech: statements 54
28 Reported speech: questions and requests 56
29 Relative clauses 58
30 Joining sentences-Ⅰ 60
31 Joining sentence-Ⅱ 62
32 Word order 64
Grammar Summaries 66
Communication Activities 81
Acknowledgments 101
Index 103