江苏省连云港市新浦中学八年级英语上册《8A Unit 6 Natural disasters Grammar》教学案（无答案） 牛津版.doc

江苏省连云港市新浦中学八年级英语上册8a unit 6 natural disasters grammar教学案（无答案） 牛津版 (一）构成 was (were) + 动词-ing构成。(二) 形式过去进行时的肯定式: i was working. / you were working. / he/she/it was working.we/you/they were working.过去进行时的否定式: i was not working. / you were not working. / he/she/it was not working.we / you / they were not working.过去进行时的疑问式：were you working at ten last night? yes, i was. / no, i wasnt.was he working at ten last night? yes, he was. / no, he wasnt. (三）用法：过去进行时的意义：表示过去正在发生或进行着的动作。例如：you were listening to me. / they were learning english. what were you doing? he was watching tv .过去进行时的用法：表示在过去某一时刻或某一时间正在进行的动作。这一特定的过去时间，除了有上下文暗示以外，一般用时间状语来表示。when were you doing this time yesterday?-we were working in class.he was mending his bike at ten oclock yesterday.i was drawing a horse when the teacher came in.while she was trying to pass a truck before her, she saw another car coming.2. 学习了过去进行时的语法，快来完成99-100页a1和a2部分的练习吧。做完之后，两人一组朗读对话，并核对答案。注意过去进行时的构成哦。3. 聪明的你能将a2 的对话改写成一段小故事吗？快来显示你的文采吧！ step2巩固练习 小试牛刀：用所给动词的正确形式填空：1. look! some children _(chat).2. sorry, i _(help) the baby tie the shoelace at present.3. some children _(chat) this time yesterday.4. sorry, i _(help) the baby tie the shoelace at that time.5. i _(wash) my face at 6 this morning.6. she _still _(lie) in bed this time yesterday.7. _you _(watch) tv from seven to nine yesterday evening.8. he _(drink) tea the whole morning.9. -where did you go just now? -to the teachers office. -what were you doing there?-i _(solve) a math problem with my teacher. it took us a long time to work it out.step 3 拓展延伸 （part b）(一) a) 当两个延续（思考举例）的动作同时发生，两个句子都可用过去进行时来表示，用while连接，如：1. people _(run)wildly while pieces of glass and bricks _(fall)down.2. yesterday afternoon, while daniel _ _ (work) on the computer, millie _(stand) beside him.3we _ _(clap) our hands while the performers _(march) across the park.b) 当一个延续的动作正在发生的时候，另外一个瞬间动作发生了，可用“when”或“while”连接，较长的动词用过去进行时，较短动词用一般过去时1. hello kitty _(wave) to the visitors while she _(dance) to the music.2. we _(read) a terrible story when suddenly the lights _(go) out.3. the doorbell _(ring) while we _(talk) on the phone yesterday.c) 一般过去时与过去进行时用法的比较: 一般过去时表示在过去某个时间发生的动作或存在的状态，而过去进行时则表示在过去某一时刻或某一段时间正在进行的动作。如：mary wrote a letter to her friend last night. mary昨晚给她的朋友写了封信。（信写完了 。）mary was writing a letter to her friend last night. mary昨晚一直在给她的朋友写信。（信不一定写完。） practice : 用when/ while 填空： 1. _simon arrived, amy was reading. 2. i was reading english _ the teacher came in. 3. _my mother was cooking, the phone rang. 4. mrs. wang was listening to music _ her husband was