字母练习 …………………………………………………………………………1 字母综合练习 ……………………………………………………………………3 Welcome Unit ……………………………………………………………………4 Unit 1 School becomes interesting. ………………………………………………6 Unit 2 It’s easy to make friends! …………………………………………………9 Unit 3 I like playing badminton. ………………………………………………13 Unit 4 How can I get to the museum? …………………………………………17 Unit 5 Let’s have fun! …………………………………………………………21 Unit 6 I want to buy a T-shirt. …………………………………………………24 Unit 7 Can I take your order? …………………………………………………28 Unit 8 We’d like to check in. …………………………………………………32 Unit 9 Life goes electronic. ……………………………………………………35 Unit 10 Happy New Year! ……………………………………………………39 动词不定式的规则变化 ………………………………………………………42 动词不定式的不规则变化 ……………………………………………………44