1. TENSES

2. 1. The Simple Present Tense 1) 结构 do; does (Passive) is (am/are) done 用于现阶段客观事实或真理，或者 经常发生的动作，也用于表示现阶段存 在的状态、特征或心理活动。 用于现阶段客观事实或真理，或者 经常发生的动作，也用于表示现阶段存 在的状态、特征或心理活动。

3. 2) 主要用法： ① 表示经常发生的动作和存在的状态。 come I often come to school early. are There are over 50,000 different characters in Chinese. goes She goes to school every day. helps He always helps others.

4. islooks He is an engineer. He looks young. major I major in English. studies Tom studies very hard. is China is a great country. ② 表示主语的特征，性格和能力。

5. ③ 表示客观事实，或普遍真理。 travels The teacher told us that light travels faster than sound. makes Practice makes perfect. goes The Earth goes around the Sun. boils Water boils at 100 ℃. rises The Sun rises in the east and sets in the west.

6. ④ 在时间、条件状语从句中表示将来的 动作。 returns I’ll tell him about it when he returns home. have If I have time tomorrow, I’ll go shopping with you. leave I’ll ring you up before I leave the office. is If it is fine tomorrow, we’ll have a football match.

7. ⑤ 表示按时刻表计划或安排好的动作。 只限于表示起始或移动意义的动词。 begin, come, leave, start, arrive, go, etc. takes The plane for San Francisco takes off at three pm. leaves My train leaves at 6:30 this morning. start We start at 8 tomorrow morning for Beijing.

8. 3) 与一般现在时连用的时间状语： every day, once / twice a week, often, usually, always, seldom, sometimes go I go to the the cinema once a week. work Sometimes we work until twelve o’clock. gets up He often gets up at seven in the morning.

9. 1. 1.I need one more stamp before my collection ______. A. has completed B. completes C. has been completed D. is completed

10. 2. --- Can I help you, sir? --- Yes. I bought this radio here yesterday, but it ______. A. didn't work B. won't work C. can't work D. doesn't work

11. 3.--- Do you like the material? --- Yes, it ______ very soft. A. is feeling B. felt B. feels D. is felt

12. 4. Do you often clean your room? 5. People speak English in many countries. --- Is your room often cleaned? --- English is spoken in many countries. 【变为被动语态】