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1、物主代词的用法英语中的物主代词可分为形容词性物主代词和名词性物主代词。1.形容词性物主代词起形容词的作用，用在名词前。例：（1）This is my book. 这是我的书。（2）We love our motherland. 我们热爱我们的祖国。2. 名词性物主代词起名词的作用。例：（1）Look at the two pencils. The red one is yours and the blue one is mine.看那两支铅笔，红色的是你的，蓝色的是我的。（2）He likes me. He doesnt like her.他喜欢我。不喜欢她。（3）Lucys hair is
2、longer than Lilys.露西的头发比莉莉的更长。3. 注意：在使用名词性物主代词时，必须有特定的语言环境，也就是要省略的名词大家已经知道，已经提起过。例： Its hers. 是她的。There is a book. Its hers. 这有本书。是她的。只有上文提及了某个名词，才会知道名词性物主代词指代的事物。4.名词性物主代词=形容词性物主代词+名词为避免重复使用名词，有时可用“名词性物主代词”来代替“形容词性物主代词+名词”的形式。例：My bag is yellow, her bag is red, his bag is blue and your bag is pink.
3、为避免重复使用bag，可写成My bag(形容词性) is yellow,hers(名词性=her bag) is red,his(名词性=his bag) is blue andyours(名词性=your bag) is pink.小学现在进行时态讲解与练习一、现在进行时的定义，构成，标志性词语定义：表示现在或现阶段正在进行或发生的动作或存在的状态。构成:主be(am/is/are) 动词-ing形式 标志性词语：1.现在进行时.通常用“now”.eg: I am doing my homework now.2.现在进行时.通常用“look”.eg: Look! My mother is
4、running!3.现在进行时.通常用“listen”.eg: Listen! They are reading.4.现在进行时.通常用“at the (this) moment”eg: At the (this) moment, he is only weeping.二、动词现在分词的构成规则1 一般情况下直接加ingthink-thinking sleep-sleeping study-studying speak-speaking say-sayingcarry-carrying wake-waking2以不发音的字母e结尾的单词,去掉字母e，再加ingcome-coming make-
5、making leave-leaving have-having take-taking3.以重读闭音节（重读闭音节即两个辅音中间夹一个元音并且重读的音节）结尾，呈现 “辅，元，辅”结构的动词，双写末尾的辅音字母，再加ingstop-stopping sit-sitting run-running forget-forgetting begin-beginning这类词还有：bigin，cut, get,hit, run, set, sit, spit, stop, swim, beg, drop, fit, nod, dig,forget, regret, rid, 等。4.以ie结尾的动词
6、，把ie改为y ，再加ingdie-dying lie-lying三、现在进行时的用法（1）用来表示说话时正在进行或者发生的动作，例如：Mother is cooking in the kitchen.妈妈在厨房里煮饭。What are you looking at? 你在看什么？（2）用来表示现阶段正在进行的动作（但说话时不一定在进行），例如： Is she writing a novel? 她正在写一本小说吗？（3）用来表示即将发生的动作，一般是指按计划或者安排好要发生的动作。适用于这种情况的动词主要有：go,come,leave,start,arrive等。例如: Im going ho
7、me in half an hour.我一个半小时内要回家。 The train is arriving soon.火车很快就要到达了。四、现在进行时的句型变化 肯定式结构：主语+be+动词-ing形式+其他.例如：We are running now. 否定式结构：主语+be+not+动词-ing形式+其他.例如：They arent doing their homework. 一般疑问句式结构：Be+主语+动词-ing形式+其他？例如：Is she having English lesson?回答：肯定Yes, she is. 否定:No, she isnt 特殊疑问句式结构：疑问词+be
8、+主语+其他？例如:What is he doing now?回答：He is swimming.五、巩固练习一. 写出下列动词的现在分词形式work_ sing_ play_ _ study_have _ dance _ write_ _ take_run_ sit_ shop_ swim_lie_二.按要求改写句子1. The boy is playing basketball.否定句：_一般疑问句：_肯定回答：_否定回答：_对“is playing basketball”提问：_对“The boy”提问：_2. They are singing in the classroom.否定句：
9、_一般疑问句：_肯定回答：_否定回答：_对“are singing”提问：_对“in the classroom”提问：_三. 用现在进行时完成下列句子1. What _ you _ (do)?2. I _ (sing) an English song.3. What _ he _ (mend)?4. He _ (mend) a car.5. _ you _ (fly) a kite? Yes, _.6. _ she _ (sit) in the boat?7. _ you _ (ask) questions?8. We _ (play) games now.9. What are you _
10、(do) now? I _(eat) bread.10. Its nine oclock. My father_(work) in the office.11. Look, the boy_(put) the rubbish into the bin.12. _he_(clean) the classroom?No, he isnt. He_(play).13. Where is Max? He_(run) on the grass.14. Listen, who_(sing) in the music room?Oh, Mary_(sing) there.四。选择题 1. Who _ ove
11、r there now? A. singing B. are sing C. is singing D. sing2. Its eight oclock. The students _ an English class. A. have B. having C. is having D. are having3. Listen! The baby _ in the next room. A. crying B. cried C. is crying D. cries4. Look! The twins _ new sweaters. A. are wearing B. wearing C. a
12、re wear D. is wearing5. Dont talk here. Grandparents _.A. is sleeping B. are sleeping C. sleeping D. sleep6. Tom is a worker. He _ in a factory. His sisters _ in a hospital.A. work/ work B. works/ work C. work/ works7. Who _ English best in your class? A. speak B. speaks C. speaking8. Mrs. Read _ the windows every day. A. is cleaning B. clean C. cleans9. We _ music and often _ to music. A. like/ listen B. likes/ listens C. like/ are listening10. She _ up at six in the morning. A. get B. gets C. getting11. On Sundays he sometimes _ his clothesand sometimes _ some shopping.A. wash/ do
