_____________________2. 祈使句的用法: a) V型祈使句（以行为动词开头）Listen to me，please. b) B型祈使句（Be+形容词）Be quiet. c) L型祈使句（Let +sb.+动词原形） Let me help you. d) No +V-ing No swimming.=Don’t swim. No photos.= Don’t take photos. 3. have to和must辨析 have to +动词原形强调客观需要，否定形式don’t have to不必 ;must+动词原形强调主观看法Because it is raining outside, I ________________ take an umbrella4. too many，too much，much to用法辨析我们有太多的家庭了。_________________________________________大厅有太多的人。____________________________________________________他的衬衫太大了__________ |
