八年级英语下册 Unit 2 Ill help to clean up the city parks（第3课时）(Grammar Focus-4c)同步语法精讲精练课件 （新版）人教新目标版.ppt

1、Unit 4Why dont you talk to your parents?,第三课时(Grammar Focus4c)单元同步语法精讲精练,浙江地区,情态动词should，could的用法 “should动词原形”表示“应该/应当做某事”。 “could动词原形”表示“可以做某事”。 should和could都可用来提出建议，表示轻微的批评或遗憾，但could语气更委婉、客气。should意为“应当/应该”；could意为“可以/可能”。 eg：You shouldnt argue with your parents! 你不应该和你父母争吵！ You could be more care

2、ful.你可以更仔细些。 当征求别人意见时，常用should。 eg：What should I do？我该做什么？,连词although，so that，until的用法 although意为“尽管/虽然”，相当于though，用来引导让步状语从句。句中用了although或though，就不可再 用but。若要强调前后两部分的对比意义，可在主句前加yet或still。 eg：Although/Though he has a lot of money，yet/still he is unhappy.他虽然有很多钱，但并不幸福。 so that意为“目的是/为的是/以便”，引导目的状语从句，从

3、句中通常含情态动词can，may，might等。 eg：He got up very early so that he could catch the early bus.他起床很早，为的是能赶上早班公共汽车。,【拓展】so that引导的目的状语从句可与in order that或in order to结构相互转换。 until与延续性动词连用时，动词用肯定形式，表示“直到为止”，指主句的动作一直持续到until后的动作发生为止；与短暂性动词连用时，动词须用否定形式，意为“直到才”，指主句的动作一直到until后的动作发生时才发生。 eg：I waited until 3：00，but he

4、 didnt come.我一直等到3点，但他没来。(wait为延续性动词) The noise of the street didnt stop until midnight.街上的喧闹声一直到半夜才停止。(stop为短暂性动词),一、单项选择。 1Last year I _ drive.I used to take the bus. AcouldBcouldntCshouldDshouldnt 2_ I try on those shoes in the window? _.They are just on show. ACould；Yes，you can BCan；Sorry，you co

5、uldnt CCould；Sorry，you cant DCan；Yes，you could 3_ our teacher is ill, _ he still comes to our class to teach us. AThough；but BThough；/ CAlthough；but D/；though,B,C,B,4Would you like some milk? No，thanks.I dont like it, _ I know its good for my health. Abecause Bthough Cif Dand 5Hey，man.You cant cross

6、 the street now.You have to wait _ the traffic lights turn green. Oh，sorry and thank you. Awhen Bafter Cuntil Dwhile 6Jimmy，its time to go to bed. Oh，I wont do that _ I finish my homework. Aif Buntil Cafter Dwhen,B,C,B,7Susan，what are the advantages (好处) of MP5 players? Mom，they are smaller and ligh

7、ter _ they can be carried very easily. Aunless Bif Cuntil Dso that,D,二、根据汉语意思完成下列句子。 8你感冒了，你应该待在家里。 You have a cold.You _ at home. 9今年夏天我们可以去海南。 We _ go to Hainan this summer. 10昨天早上李明八点才起床。 Li Ming _ get up _ eight oclock yesterday morning. 11这些疲倦的孩子直到晚上9点钟才能回家。 The tired children _ get home _9：00 pm. 12我们应该和