现在进行和过去进行时

现在进行时 过去进行时语法专题讲解一、现在进行时 现在进行时表示现在正在进行的动作或是现阶段正发生而此刻不一定在进行的动作。现在进行时的构成现在进行时的构成是:主语+be+v.ing现在分词形式 第一人称单数I+am+ing. 第一人称复数We+are+ing. 第二人称单(复)数 You+are+ing 第三人称单数 He（She，it）+is+ing 第三人称复数 They+are+ing 否定句：主语+be（is/am/are）+not+现在分词 一般疑问句:be（is/am/are）+主语+现在分词 特殊疑问句：特殊疑问词+be动词+主语+现在分词+Sth? 现在分词的构成方法：1、一般在动词词尾加上-ing 2、以不发音字母e结尾的动词，先去e，再加-ing. 3、.以重读闭音节末尾只有一个辅音字母结尾的词，它前面是单个元音字母时要先将词尾的辅音字母双写，再加上-ing. 4、特殊情况以ie结尾的，把ie变y加ing， lie-lying现在进行时的标志有很多，如： now,these days, this week, at this moment,look, listen，Be quiet!/Don't talk,，its+具体时间【练一练】写出它们的现在分词：buy_wait_write_shop_talk_tell_have_swim_walk_drink_ take_ run_ eat _ enjoy_ drive_ get_ lie_一将下列句子改成现在进行时1.  Tom speaks Chinese. 2.   We have four lessons.3.   I watch TV every day. 4.   She works in a hospital. 5.  Kitty and Ben have lunch at about twelve.6.   His father can help them. 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：_一般疑问句：_肯定回答：_否定回答：_对“are singing ”提问：_对“ in the classroom”提问：_4.she,the window,open,now.(用现在进行时连词句.)_5.The birds are singing in the tree.(就划线部分提问)_6.is,who,the window,cleaning?(连词成句)_8.She is closing the door now.(改成否定句)_9.You are doing your homework.(用"I"作主语改写子)_11.The Young Pioneers are helping the old woman.(改成一般疑问句)_三. 检测1.  What are you _(do) now? I _(eat) bread.2.  Its nine oclock. My father_(work) in the office.3.  Look, the boy_ (put) the rubbish into the bin.4.  _he_ (clean) the classroom? No, he isnt. He_ (play).5. Where is Mark? He_ (run) on the grass.6. Listen, who_ (sing) in the music room? Oh, Mary_(sing) there.现在进行时特殊用法： A. 习惯进行：表示长期的或重复性的动作，说话时动作未必正在进行。 例：Mr. Green is writing another novel. (说话时并未在写，只处于写作的状态。) We _ _on a farm these days.这些天我们在农场干活。B .现在进行时表示将来常见的动词有：come, go, stay, leave, fly等。We're flying to Paris tomorrow.(我们明天乘飞机去巴黎） C表示渐变，这样的动词有：get, grow, become, turn, run, go, begin等。例如： The leaves _ _red. 叶子在变红。巩固练习一、写出下例动词的现在分词形式1）give_2）use_3）move_4）skate_5）draw_6）tell_7）ring_8）wear_9）get_10）put_11）hit_12）stop_13）keep_14）hurt_15）know_16）lie_17）die_18）begin_19）forget_20）save_21）close_22）see_23）carry_二、用动词的正确时态填空1）I_(talk).You_(listen)tO me now. 2）Look,the boy_(run)fas 3）-What are you doing?-I_(do) my homework. 4）-_the students_(read) English.-Yes,they are.5）Tom_(not study)English.He is studying Chinese. 6）-Who_(sing)a song? -Li Ying is. 7）The girl_(not eat)bananas now.8）-Where_they_(stand)?-They are standing over there.9）Look！ The boy over there_(ply) a model plane.10）-What is Meimei doing now?-She_(watch)TV with her parents三 按照要求进行句型转换。1. She is doing her homework.(改为否定句)She _ _ her homework.2. They are looking at the blackboard.(改为一般疑问句)_ _ _at the blackboard?3. Tom is playing basketball.(对画线部分提问)What _ _ _?4.They are cleaning the house.（一般疑问句）5.Sam is at work.（改为同义句）6.Tom is singing.（改为否定句）过去进行时 构成：过去进行时表示过去某一时刻或某阶段正在进行的动作。肯定式：主语+was/were+现在分词否定式：主语+was/were not+现在分词疑问式：Was/Were+主语+现在分词疑问否定式：Was/Were+主语+not+现在分词常用的时间状语this morning,the whole morning,all day,yesterday,from nine to ten last evening,when,while,at that time,.just now，a moment ago 过去进行时由“was(第一、三人称单数)或were(第二人称单数和各人称的复数)+现在分词”构成。 过去进行时的时间状语有：then, at that time, this time yesterday, at (eight) yesterday (morning),(a year) ago, 以及由when引出的时间状语从句。如：He _ _supper this time yesterday.(昨天这个时候他正在做晚饭) 用于宾语从句或时间状语从句中,表示与主句动作同时进行而且是延续时间较长。句子中通常不用时间状语。如：She saw it happen when she was walking past.(她路过时看到事情的发生)They sang a lot of songs while they were walking in the dark forest.(他们在黑暗的森林里走时唱了很多歌)二 、过去进行时用法1 表示过去某一时刻或某一段时间内正在进行的动作。I _ _the violin at eight o'clock yesterday evening.昨晚8点钟我在练小提琴。They _ _ you yesterday.他们昨天一直在等你。上周我一直都在学校。2 表示与过去发生的某事同时发生的动作。· When I called him,he_ _ _.我给他打电话的时候,他正在吃晚饭。二用动词的适当形式填空。7 .My brother came into the bedroom while I_(dance).8._he_(lie) on the ground at nine yesterday evening?9.What_Jim_(write) when the teacher came in?10.Mike and I_(play) basketball at that time yesterday afternoon. 11.I  _ (have) my breakfast at half past six yesterday morning. 12.What _ you _ (do) at that time?   We _ (watch) TV.13Was your father at home yesterday evening? Yes ,he was. He _ (listen) to the music.14.They _(not make) a model bike when I saw him.15._ they _ (have) a meeting at 4 yesterday afternoon?No, they _. They _ (clean) the classroom.三、句型转换1. we were having a P.E.class at four yesterday afternoon.（改为否定/一般疑问句）2. Tom was watching TV at eight last night.（一般疑问句并做肯、否定回答）3. He ran in the park.(用at this time yesterday改写句子)4. They were playing computer games at nine last night.（一般疑问句并做肯否定回答）5. They werent playing volleyball at that time.（改为肯定句现在进行时、过去进行时练习一、填空1. Look！The boy over there (play) a model plane.2. When you (knock) at the door yesterday, I (do) some washing. 3. I (telephone) a friend when Bob (come) in. 4. - the students (read) English.-Yes, they are.5. Jane (wait) for me when I (arrive).6. Mike and I (play) basketball at that time yesterday afternoon. 7. Tom (not study) English. He is studying Chinese.8. It was six. The Greens (have) supper.9. -What you （do） at ten o'clock yesterday？ -I （studay） in class10. -Where they (stand)? -They are standing over there.11. It was quite late at night. George (read) and Amy (play) her needle when they (hear) a knock at the door.12. While she (watch) TV, her son (play) outside the room.13. -What is Meimei doing now? -She (watch) TV with her parents14. What you (do)? 15. I (sing) an English song.16. We (test) the new machine when the electricity (go) off.17. We cant help you, because we (have) classes. 18. What are you (do) now? I (eat) bread.19. Its nine oclock. My father (work) in the office. 20. When Harry （have） breakfast Lily （telephone） him21. She (not want) to stay in bed while the others (all, work) in the fields.22. Look, the boy (put) the rubbish into the bin.23. Where is Mak? He (run) on the grass.24. When the teacher (come) into the classroom, the students (laugh) loudly.