译林版9年级下册unit2greatpeopleGrammar.ppt

Fill in the blanks with the Present Perfect Tense: I __________ in Shenzhen for about 15 years. (live) 2. He ____________ here since 1998. (work) 3. Bob isn’t in. He_________ to the cinema. (go) 4. I _________ to Australia three times. (be) 5. She ___________ English for about five years. (study) 6. She ___________ English since 1999. (teach) have lived has worked has gone has studied has taught have been Many modern inventions (1) __________ (make/ have made) a great difference in out life. They (2) ____________ (changed/ have changed) the way we live. In ancient times, people (3) _____ (used/ have used) salt to help them keep fish or meat for a longer time. Fresh food would go bad in summer in a few hours. The invention of fridge (4) _________ (solved/ has solved) this problem. have made have changed used has solved In the past, people (5) _______ (washed/ have washed) their clothes by hand. It (6) ____ (was/ has been) tiring, and it (7) _____ (took/ has taken) a lot of time. With the invention of the washing machine, people (8) _________ (had/ have had) more time to relax. In the old days, people (9) ________ (travelled/ have travelled) by ship. Now planes (10) _________ (made/ have made) journeys more comfortable. washed was took have had travelled have made 手工 * * * * 9B Unit 2 Great people Grammar Part A on P26 对比： 一般现在时Simple present 现在进行时 Present continuous 一般现在时：表示主语经常性和习惯性的动 作或目前存在的状态，也表示 客观的自然现象。 现在进行时：表示说话时正在进行的动作， 也表示目前或现阶段一直进行 的动作。 eg: She often does her homework in the evening. 她经常在晚上做作业。 She is doing her homework now. 现在她正在做作业。 一般现在时 (1) be动词的一般现在时形式：is, am, are (2) 其他实义动词的一般现在时形式： 动词原形或 第三人称单数形式 2. 现在进行时 be动词(am /is /are+ 动词的ing形式（现在分词） 主语是第三人称单数时,行为动词的变化规则如下: 一般动词在词尾加-s,如: helps, makes, gets, swims, knows, plays等. 以s, x, ch, sh, 或o结尾的动词在词尾加-es,如dresses, washes, catches, does等. 以辅音字母+y结尾的动词, 先变y为i,