小学四年级 英语语法知识总结.doc

一 助动词，be动词应用助动词Be动词疑问Do DoesIs Are Am肯定do doesIs are am否定dont doesntisnt arent am not用法在句子中有实际意义的动词出现时句子中没有实际意义的动词出现口诀oes 问， does答，否定用doesnt Do问， do答，否定用dont Is问， is答， 否定用isnt Are they? 问， are答， 否定用arent Are you？问， am答， 否定用 am not二三单用法：he she it 人名 your father my friend the water one bear后面动词加s或es，有助动词在助动词上加e或es.一句话中只有一处变三单加es或s, 有助动词does，则动词不变。如： He doesnt like cows. What does your mother do? Does he like cats? The cow likes grass.口诀： Does 问， does答，否定用doesnt 三单复数用法： How much are the jeans? Theyre yuan.they? How much is the shirt？ Its yuan.it? Where are the dogs? They arethey?it? she? he? Where is the supermarket? the dog? Its .四 any 和 some 用法： (1) any和some后都要加名词复数： Do you have any dresses? coats? pajamas? We have some skrits. (2) any用在疑问句和否定句， some用在肯定句： Do you have any coats? Yes, we have some. No, we dont have any.五主格、宾格、物主代词用法：主格（一句话首个单词）宾格 (动词后用宾格)形容词性物主代词 （谁谁谁的）第一人称Imemy 我的weusour 我们的第二人称youyouyour 你的，你们的第三人称单数hehimhis 他的sheherher 她的第三人称复数theythemtheir 他们的例： 主格 宾格She likes her.He likes him.He likes me.They know them.主格 物主代词She likes her family.He likes his family.I like my family.物主代词His father is a Her mother is a .My father is a 六 W词的意思：What 什么 What does she do?Where 哪里 Where is the supermarket?Who 谁 Who are you?When 何时 When do you go to school