新概念英语第一册 Lesson 31-32 单词语法

Lesson31-32现在进行时 第1课时 一、定义: (1) 现在时表示现在(说话瞬间)正在进行或发生的动作。 Eg. The students are listening to the teacher.学生们正在听老师讲课。 He is watching TV now.他正在看电视。 (2) 也可表示当前一段时间内的活动或进行现阶段正在进行的动作。 Eg. We are working on a farm these days.这些天我们在农场上工作。 I’m reading a history book this month.本月我在读一本历史书。 二、结构:be(am / is / are) + 动词的现在分词(v-ing)形式 三、动词现在分词的构成: (1)直接在动词尾+ing play—playing read—reading eat—eating talk _ work _ go _ (2) 以不发音的字母e结尾的动词,失去e再加ing lose—losing take—taking dance—dancing make _ write _ come _ ride_ 注意:see—seeing (结尾的-ee发音/ i : /) (3)以重读闭音节结尾的动词,且词尾只有一个辅音字母,应双写其辅音字母再加ing cut—cutting put—putting sit—sitting forget—forgetting get—getting shop_ stop_ run_ swim_ (4)以-ie结尾的,改-ie为y再加ing tie(系,捆绑)—tying die(死亡)—dying lie(撒谎)—lying 四、句型结构: 肯定句:Eg. He is reading a book at home now. 否定句:Eg. He is not reading a book at home now. 一般疑问句:Eg. -Is he reading a book at home now? -Yes, he is. -No, he isn’t. 特殊疑问句:Eg. He is reading a book at home now. What is he doing at home now? He is reading a book at home now. When is he reading a book? He is reading a book at home now. Where is he reading a book now? He is reading a book at home now. Who is reading a book at home now? (1)肯定句:主语 + be(am / is / are) + v-ing + 其他。 (2)否定句:主语 + be(am / is / are) + not + v-ing + 其他。 注意:is not = _ are not = _ am not不能缩写 (3)一般疑问句: Be + 主语 + v-ing + 其他? 肯定回答:Yes, 主语 + be(am / is / are). 否定回答:No, 主语 + be(am / is / are) + not. (4)特殊疑问句(即对句中的划线部分提问):疑问词 + be(am / is / are) + 主语 + v-ing + 其他? 注意:特殊疑问句中疑问词代替了划线部分,划线部分不再出现。 【即学即练】 I’m watching TV right now. 1.变否定句: _ TV right now. 2.变一般疑问句:_ TV right now? 3.变特殊疑问句:_ right now?你正在做什么? _ TV right now?谁正在看电视? 现在进行时态 一、将下列动词变成ing形式。 help_ come_ swim_ eat _ use_ find _ sit_ write_ tie _ make _ play_ clean_ see_ walk_ ride _ run_ draw_ listen_ shop _ dance_ 二、单项选择。 (下划线标出时间标志词) ( ) 1. -What are you doing? -I_ an interesting book. A. read B. reading C.am reading D. is reading ( ) 2.-What _ your sister doing? -She _ cleaning the floor. A. are, is B does, is C. is, is D. is,