记单词你认真了么.ppt

2016 记单词你认真了么 to/too/two right/write four/for sun/son their/there pair/pear know/no our/hour 小学四年级重要语法归纳 Lets go! 情态动词Can 定义：情态动词是一种本身有一定的词义，表示说话人的情绪，态度或语气的动词，但不能单独作谓语，只能和其他的动词原形构成谓语。 情态动词can意为“能，会”表示一个人所具备的能力。 用法： 1）不可以单独作谓语，要与其他动词原形一起构成谓语。 I can. I can swim. 2）没有人称和数的变化。 人称代词： I you she he it we you they I can play basketball. She can play basketball. We can play baskerball. He ______play basketball. We______play basketball. The bird can fly. Birds can fly. Cats_____swim. 3)一般疑问句把情态动词can提前。 肯定回答：Yes, 主语+can. 否定回答：No ,主语+cant.(can not) Can you dance? 肯定回答：Yes,I can. 否定回答：No,I can;t. 造句：sing/paint/skate/play the piano.(用任意人称) Can you/she/he/they/it sing? Yes,____can. No,_____cant. 4)特殊疑问句：What can+主语+do,（人称、名字）? What can you do,mom? I can cook. What can she do? She can tell jokes. 小试牛刀 He_____ride a bike. We_____make sandwish. It_______run very fast. Fishes_____swim. Can you play the guitar,Tom? Yes,_______ No,________ She can dance with the music.对划线部分提问。（用一般疑问句和特殊疑问句） The boy can jump very high.对划线部分提问。（用一般疑问句和特殊疑问句） There be用法 There be(is/are)表示某处有某物 肯定形式：There be 名词（单数、复数）+地点状语 否定形式：There be not+名词+地点状语 There is a book on the desk. There are some books on the desk. There isnt a book on the desk. There arent any books on the desk. 回顾：方位介词 in on under beside 一般疑问：Be there+名词+地点状语 肯定回答：Yes,there is/are+(名词+地点状语) 否定回答：No,there isnt/arent+(名词+地点状语) Is there a dog in the picture?(还原/复数) Yes,there is. No,there isnt. Are there any boats in the river?（还原） Yes,there are. No,there arent.