整合提优 专题4 多变的 be 动词、“s”的多重身份-【通城学典】四年级英语暑期升级训练（人教PEP版）

-整合提优 专题4多变的be动词/“s”的多重身份 ⑨专题解读 多变的be动词 be动词的意思和用法多种多样。在小学阶段,我们主要学习其表示“是”之意。 1.变化形式 am,is,are是be动词的不同变化形式。根据句子中不同的人称和数,它会随机应变地出现在句 子中。 2.位置 在句子里,be动词一般紧跟着主语,在整个句子中起到串联的作用,所以be动词还被称为“系动 词”。如: This dress is pretty.这条连衣裙很漂亮 My shoes are green.我的鞋子是绿色的。 3.用法口诀 我(D用am,你(you)用are; is用于他(he)、她(she)、它(it。 单数is,复数are 变疑问,往前提,句末问号莫丢弃 变否定,更容易,be后not别忘记。 疑问、否定任你变,句首大写要切记! “s”的多重身份 在英语学习中,我们经常会碰到与“s”搭配构成的单词。别以为“s”的样子不太起眼,它的作用还 真不小 作用一:表示is,与前面的词构成缩略形式,常用于口语中。如 Who’s(= Who is) that boy?那个男孩是谁? It's(=It is) etup.该起床了 作用二:表示Us,与let构成缩略形式。如 Iet's(= Let us) go to school.我们一起去上学吧。 作用三:用在某些名词后面,表示名词所有格,意为……的”。如: Is this hat John's?这顶帽子是约翰的吗? No, It isn't.It' s Mike's.不,不是的。它是迈克的 需要注意的是,以s结尾的名词,一般直接在词尾加“”。如 Happy Teachers' Day!教师节快乐 Whose coat is this?这是谁的外套? lt' s Mr Jones:.它是琼斯先生的。 你瞧,小小“'s”的用法还真不少,学习中一定要好好区分哦! 音期级训练英语(PEP版)四年级 提优训练 、读句子或对话,圈出恰当的内容。 your good friend? he(teacher's/teachers') office is next to the library. A. Who's B. What's (Who's/Whose) pants are those? C. Whose They re mine My brother thin and he 3. Hi, John.(Let/Lets)go to the zoo. short hair 4. What's your brothers name B. ha (Hes/his) name is Ben 5. Look! The room is my(parents/parents ere my homework. An my, is this yours? am No. It's(Mikes/Mikes 用be动词的适当形式填空 A. Is B. A twelve years o 四、为下列句子选择合适的问句 2.W good friends. )1. He's a cook Is dress pretty )2. She's my cousin )3. Yes, they are No, they aren’t )4. They're mine 5. Where my crayons? )5. No. it's me Mary in the study? A. Is this your baby sister? 7. My parents at home B. Are these carrots? C. Whose shoes are these? 8. Breakfast eady D. What's your uncle's job 单项选择 E. Who's that girl? )1. Susan is a girl. thin 五、连词成句。 B. Sh C. Her )2. Is your mother a nurse? 2. that, computer, is, the, room (. A. Yes, I am 3. job, is, your, what, mothers(?) C. Yes, he is 4. shoes, are, Chen jies, these (.) nese onions am B. is 5. is, time, what, now, the (? are