现在和过去进行时

1、现在进行时1现在进行时表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作，其时间状语有：now, look, listen等2基本结构：肯定句：be：+动词ing 否定句：be+not+动词ing一般疑问句: be + 主语 + 动词ing？ 特殊疑问句：疑问词 + be + 主语 + 动词ing?3.动词加ing的变化规则 A一般情况下，直接加ing，如：cook-cooking B以不发音的e结尾，去e加ing，如：make-making, taste-tasting C如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running, stop-stopping 还有很多不规则的。现在进行时专项练习：一、写出下列动词的现在分词： play_ read_ sweep stand sit make_ g o_sleep_jump walk clean wash ski_ sing _ do like_ write_ have_ dance_come _skate_ _ ride love_put_ live_ swim _

2、 run_ get_ shop_buy _二、用所给的动词的正确形式填空： 1.The boy _ _ _ ( draw)a picture now. 2. Listen .Some girls _ _ ( sing)in the classroom . 3. My mother _ _ ( cook )some nice food now. 4. What _ you _ ( do ) now? I am reading a book.5. They _ _(not water) the flowers now.6. What is she doing? She _ _ (listen ) to music.7. _Helen_(wash )clothes? Yes ,she is .8. Whatareyou_(do),Helen?Im_(sit)onthefootball.9. Listen.What_they_(do)?They_(play)thepiano.10.Itisthreeoclockintheafternoon.Allthechildren_(have)anArtl

3、esson.11.Dontplaytheviolin.Yourfather_(sleep)inthebedroom.12.Lookatthewoman.The boys_(swim)overthere.13.Listentothebirds.They_(sing)inthetrees. 14. Lucy _ (not watch) TV now. She _(read) English.15. -What _ they _ (do) now? -They _ (have) an English lesson. 三、句型转换： 1The students are cleaning the classroom . 变否定句_2Im playing the football in the playground .变疑问句_3Tom is reading books in his study . 对划线部分进行提问 4. The boy is playing basketball.一般疑问句/肯定回答：_ _对画线部分提问：_5.They are singing in the classroo

4、m.否定句：_一般疑问句/否定回答：_对画线部分提问：_四、按要求转换下列各句： 1. We are having lunch at home.(改为一般疑问句) _ you _ lunch at home? 2. They are reading English in the classroom.(改为单数句) _ _ reading English in the classroom. 3. Jack is flying the kite now. (对划线部分提问) _ _ Jack _ now? 4. They work hard every day.(用now改写句子) They _ _ hard now.过去进行时过去进行时是表示过去某一时刻或某一时间内正在进行或发生的动作。可以从两个方面来理解：1 过去某一时刻正在进行或发生的动作。如They were playing football at ten oclock yesterday morning My mother was cooking when I got home I was washing my clothes

5、at this time yesterday 2 过去某阶段持续进行的动作What were you doing during the holiday?另外，在复合句中，若主要动作和背景动作是同时发生的，那么主从句都可用过去进行时如 Jenny was reading while Danny was writing一过去进行时常与过去某一特定时间的状语连用，如 last night， at that time，at noon yesterday， last Sunday 等。 也有时没有时间状语，要通过上下文的暗示来确定用过去进行时。Eg The students all worked hard Everyone knew what he was working for二.其结构是助动词be的过去形式was/were ving其句式变化仍然要在be上做文章。肯定句：We were working in class否定句：We werent working in class一般疑问句：Were you working in class? 特殊疑问句：What were you doing

6、 in class.做题时常见错误如下：一、易把be现在分词记成be过去分词例：He was talked （talk） to his mum at that time答案：was talking解析：过去进行时与现在进行时结构上的区别体现在be动词上。二、丢掉be动词或忘记把动词变成现在分词例：1 I watching（watch）TV when he came in答案：was watching2 They were play（play）games at 5：00 pm yesterday答案： were playing解析：现在进行时中“be现在分词，缺一不可”的规律也可应用于过去进行时。三、对动词或动词词组提问时丢掉doing例：We were flying kites at 5：00 p.m yesterday （对划线部分提问）What were you at 5：00 p.m yesterday? 误答案：What were you doing at 5：00 p.m yesterday?解析：现在进行时中“Whatdoing”?句式同样适用于过去进行时。四、易与现在进行

7、时弄混例：My mother is cooking（cook）when I got home答案：was cooking解析：这两种时态的共同点是都表示动作正在进行，但现在进行时前提是现在，而过去进行时前提是过去，由when I got home可看出前提是过去。五、易与一般过去时弄混例：昨晚我在读一本故事书。I read（read）a story book yesterday evening答案：was reading解析：这两种时态的共同点是都用于表示过去发生的动作。但过去进行时强调动作正在进行，而一般过去时则表示过去某一时间所发生的动作或存在的状态，它表示的动作往往已经完成。“在”说明正在进行，而“I read a story book yesterday evening”的意思是昨晚我读了一本故事书，言下之意已经读完了。故用过去进行时。另外，在宾语从句中当主句为过去时，从句若是现在进行时，需变成过去进行时。eg He said that he was drawing a cat at noon yesterday一填入以下单词的正确形式。1My brother came into the bedroom while I _ _(dance)2_ he _(lie) on the ground at nine yesterday evening ?3 What _ Jim _(write) when the teacher came in ?4. Mike and I _ _(play) baskteball at that time yesterday afternoon.5I first met Lisa three years ago. She _ _(work) at a radio shop at that time._二.按要求进行

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