《Natural disasters》GrammarPPT课件
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3. What were you doing when I _k_n_o_c_k_e_d_ at the door? 我敲门的时候你在干什么？
4. She w__a_s_n_’t__cl_e_a_n_i_n_g_the room when I w__e_n_t to see her. 我去看她的时候她不是在打扫房间。
when ,while 的区别
I was reading when you came in.
I was reading when you were sleeping.
When引导的时间状语从句，谓语是延续性的，或者短 暂性的。通常用一般过去时，也可以用进行时。
when while 的区别
My mother was watching TV while I was doing my homework.
Unit 8 Natural disasters
Grammar B
What were you doing when the teacher came into the classroom just now?
do homework clean the desk talk with my desk mate prepare for the next lesson look for the book read English books have breakfast
When the teacher came in.
What was A doing while B was doing sth?
…was running while …was walking. …was playing basketball while …was playing football. …was reading books while …was playing computer games. …was singing while …was doing his homework
came in.
when 后通常加短暂性动词，如：arrive, come in, get up, open, close, finish, begin, come, go, arrive, reach, get to, leave, move, borrow, buy, die, knock 等 While后通常加延续性动词, 如：live, ruh, read, study, teach, eat, drink, write, dance, sing, smoke 等
He was taking a shower while his wife was talking on the phone.
while引导的时间状语从句，谓语动词只能是延续性的，通 常用进行时。
The teacher came in w__h_i_lestudents were talking noisily. =The students were talking noisilyw_h_e_n the teacher
when
I was doing homework I was cleaning the desk I was talking with my
deskmate I was preparing for the
next lesson
I was looking for the book I was having breakfast
7. They _w__e_r_e_r_e_a_d_in_g__the newspaper when I w__e_n_t_in__to_ the room. 我走进屋子时他们正在看报纸。
8. What _w_e_r_e_ you _d_o_i_n_g__ at five yesterday afternoon? 昨天下午5点你在做什么？
缺乏明确的目标，一生将庸庸碌碌。 工欲善其事，必先利其器。——《论语·卫灵公》 注意你的思想，它会变成你的言语；注意你的言语，它会变成你的行动；注意你的行动，它会变成你的习惯；注意你的习惯，它会变成你的性 格；注意你的性格，它会变成你的命运。 志士仁人，无求生以害仁，有杀生以成仁。——《论语·卫灵公》（杀身成仁） 知人者智，自知者明。胜人者有力，自胜者强。——老子 错误犯过一次，尽可能的不要再犯第二次。 内心充满忌妒，心中不坦白，言语不正的人，不能算是一位五官端正的人。 遇到困难时不要放弃，要记住，坚持到底就是胜利。 重要的不是知识的数量，而是知识的质量，有些人知道很多很多，但却不知道最有用的东西。 其身正，不令而行；其身不正，虽令不从。——《论语·子路》
巩固练习
1.My wallet dropped on the ground _w_h__il_e_ I was running.
2. _W__h_e_n_ I was falling asleep, there was a loud knock on the door.
3. _W__h_il_e_ he was reading, an earthquake started.
1. I _w_a_s_d_o_i_n_g_ my homework when Mike _c_a_m_e_ last night. 昨天晚上迈克来的时候我正在写作业。
2. While Ann w__a_s_w__a_tc_h_i_n_g_TV, her father _g_o_t home. 安正在看电视时，她父亲回来了。
4. Were the students listening to the teacher carefully _w_h_i_le__ the teacher was giving a lesson?
5. ___W__h_e_n_the telephone rang, I became nervous.
9. The students _w_e_r_e_p_r_e_p_a_r_i_n_g_for their lessons when Mr Black entered the classroom. Black先生走进教室的时候学生们正在 准备功课。
10.The teacher w__a_s_t_a_lk_i_n_g_to some parents when I saw her. 我见到老师的时候她正在和家长谈话。
5. I _w_a_s_s_p_e_n_d_i_n_g__my vocation England this time last summer. 去年夏天的这个时候我正在英国度假。
6. Mary _w_a_s_d_a_n__ci_n_g_ while Peter w__a_s_p_l_a_y_in__g_the piano. Mary在跳舞，而Peter在弹钢琴。
4. She w__a_s_n_’t__cl_e_a_n_i_n_g_the room when I w__e_n_t to see her. 我去看她的时候她不是在打扫房间。
when ,while 的区别
I was reading when you came in.
I was reading when you were sleeping.
When引导的时间状语从句，谓语是延续性的，或者短 暂性的。通常用一般过去时，也可以用进行时。
when while 的区别
My mother was watching TV while I was doing my homework.
Unit 8 Natural disasters
Grammar B
What were you doing when the teacher came into the classroom just now?
do homework clean the desk talk with my desk mate prepare for the next lesson look for the book read English books have breakfast
When the teacher came in.
What was A doing while B was doing sth?
…was running while …was walking. …was playing basketball while …was playing football. …was reading books while …was playing computer games. …was singing while …was doing his homework
came in.
when 后通常加短暂性动词，如：arrive, come in, get up, open, close, finish, begin, come, go, arrive, reach, get to, leave, move, borrow, buy, die, knock 等 While后通常加延续性动词, 如：live, ruh, read, study, teach, eat, drink, write, dance, sing, smoke 等
He was taking a shower while his wife was talking on the phone.
while引导的时间状语从句，谓语动词只能是延续性的，通 常用进行时。
The teacher came in w__h_i_lestudents were talking noisily. =The students were talking noisilyw_h_e_n the teacher
when
I was doing homework I was cleaning the desk I was talking with my
deskmate I was preparing for the
next lesson
I was looking for the book I was having breakfast
7. They _w__e_r_e_r_e_a_d_in_g__the newspaper when I w__e_n_t_in__to_ the room. 我走进屋子时他们正在看报纸。
8. What _w_e_r_e_ you _d_o_i_n_g__ at five yesterday afternoon? 昨天下午5点你在做什么？
缺乏明确的目标，一生将庸庸碌碌。 工欲善其事，必先利其器。——《论语·卫灵公》 注意你的思想，它会变成你的言语；注意你的言语，它会变成你的行动；注意你的行动，它会变成你的习惯；注意你的习惯，它会变成你的性 格；注意你的性格，它会变成你的命运。 志士仁人，无求生以害仁，有杀生以成仁。——《论语·卫灵公》（杀身成仁） 知人者智，自知者明。胜人者有力，自胜者强。——老子 错误犯过一次，尽可能的不要再犯第二次。 内心充满忌妒，心中不坦白，言语不正的人，不能算是一位五官端正的人。 遇到困难时不要放弃，要记住，坚持到底就是胜利。 重要的不是知识的数量，而是知识的质量，有些人知道很多很多，但却不知道最有用的东西。 其身正，不令而行；其身不正，虽令不从。——《论语·子路》
巩固练习
1.My wallet dropped on the ground _w_h__il_e_ I was running.
2. _W__h_e_n_ I was falling asleep, there was a loud knock on the door.
3. _W__h_il_e_ he was reading, an earthquake started.
1. I _w_a_s_d_o_i_n_g_ my homework when Mike _c_a_m_e_ last night. 昨天晚上迈克来的时候我正在写作业。
2. While Ann w__a_s_w__a_tc_h_i_n_g_TV, her father _g_o_t home. 安正在看电视时，她父亲回来了。
4. Were the students listening to the teacher carefully _w_h_i_le__ the teacher was giving a lesson?
5. ___W__h_e_n_the telephone rang, I became nervous.
9. The students _w_e_r_e_p_r_e_p_a_r_i_n_g_for their lessons when Mr Black entered the classroom. Black先生走进教室的时候学生们正在 准备功课。
10.The teacher w__a_s_t_a_lk_i_n_g_to some parents when I saw her. 我见到老师的时候她正在和家长谈话。
5. I _w_a_s_s_p_e_n_d_i_n_g__my vocation England this time last summer. 去年夏天的这个时候我正在英国度假。
6. Mary _w_a_s_d_a_n__ci_n_g_ while Peter w__a_s_p_l_a_y_in__g_the piano. Mary在跳舞，而Peter在弹钢琴。