大学英语 第3册PDF电子书下载

目录 1

Book Ⅰ．练习答案 1

Key to Lesson One 1

Key to Lesson Two 1

Key to Lesson Three 2

Key to Lesson Four 4

Key to Lesson Five 5

Key to Lesson Six 7

Key to Lesson Seven 9

Key to Lesson Eight 10

Key to Lesson Nine 13

Key to Lesson Ten 14

Key to Lesson Eleven 16

Key to Lesson Twelve 18

Key to Lesson Thirteen 19

Key to Lesson Fourteen 21

Key to Lesson Fifteen 23

Book Ⅱ．练习答案 26

Key to Lesson One 26

Key to Lesson Two 29

Key to Lesson Three 30

Key to Lesson Four 32

Key to Lesson Five 34

Key to Lesson Six 37

Key to Lesson Seven 39

Key to Lesson Eight 41

Key to Lesson Nine 42

Key to Lesson Ten 44

Key to Lesson Eleven 45

Key to Lesson Twelve 46

Key to Lesson Thirteen 47

Key to Lesson Fourteen 49

Key to LessoN Fifteen 50

Book Ⅰ．课文翻译 53

BookⅡ．课文翻译 65

语法 88

音标 88

冠词 91

名词 94

代词 96

数词 104

介词 106

动词时态 109

被动语态 115

句子的强调问题 118

主语与谓语一致的问题 118

疑问句 121

句子的种类和名词从句 123

定语从句 126

倒装 131

构词法 132

非谓语动词 136

动词不定式 137

动名词 140

分词 143

形容词与副词 146

形容词和副词的比较级和最高级 149

常用动词间的区别 152

连词 155

状语从句 157

虚拟语气 160

It的用法 163

否定形式…………………………………………………………………………………（16？）直接引语与间接引语 168

Test 172