人教版八年级英语下册Unit8 Section A3精品课件

3. 以“辅音字母 + y”结尾的动词，变y为i， 再加-ed。如： study → studied → studied; hurry → hurried → hurried; reply → replied → replied
4. 词尾只有一个辅音字母的重读闭音节动 词，要双写辅音字母，再加-ed。如： stop → stopped → stopped; clap → clapped → clapped
7. 结尾的字母d变t。如： lend → lent → lent; build → built → built; send → sent → sent
8. 变为以-ought或-aught结尾。如： buy → bought → bought; bring → brought → brought; catch → caught → caught; teach → taught → taught
一、过去式和过去分词的变化相同 规则变化： 1. 一般在动词词尾直接加ed。如：
pick → picked → picked; wish → wished → wished; stay → stayed → stayed 2. 以不发音的e结尾的动词后面加d。如： like → liked → liked; hope → hoped → hoped; phone → phoned → phoned
不规则变化： 5. 以不变应万变。如：
let → let → let; put → put → put; read → read → read 6. 若中间有双写e，则去掉一个e，单词 末尾再加t。如： feel → felt → felt; keep → kept → kept; sleep → slept → slept
B: No, not yet.
3. A: Do you know when Tom is leaving?
B: _H_e__h_a_s_a_l_r_e_a_d_y__le_f_t_______.
(already/ leave)
A: When __d_i_d__h_e_l_e_a_v_e_______? (leave)
15、一年之计，莫如树谷；十年之计，莫如树木；终身之计，莫如树人。2021年7月2021/7/282021/7/282021/7/287/28/2021
16、提出一个问题往往比解决一个更重要。因为解决问题也许仅是一个数学上或实验上的技能而已，而提出新的问题，却需要有创造性的想像力，而且标志着科学的真正进步。2021/7/282021/7/28July 28, 2021
—Why is Mr. Yang still in the teachers’ office?
—Maybe he ___B_____ his work yet. A. doesn’t finish B. hasn’t finished C. haven’t finished
4a Use the words in brackets to complete the conversations.
用法 1. 表示过去发生或已经完成的某一动作
对现在造成的影响或结果。
e.g. –Have you had your lunch yet? –Yes, I have. I’ve just had it. (现在 我不饿了。)
2. 表示动作或状态从过去某一时刻开始， 一直延续到现在，而且可能还要继续 下去。
11、一个好的教师，是一个懂得心理学和教育学的人。2021/7/282021/7/282021/7/28Jul-2128-Jul-21
12、要记住，你不仅是教课的教师，也是学生的教育者，生活的导师和道德的引路人。2021/7/282021/7/282021/7/28Wednesday, July 28, 2021
构成 现在完成时是由“助动词have / has+ 动 词的过去分词”构成的，规则动词的过 去分词构成与过去式相同，不规则动词 的过去分词则需逐个记忆。
动词的过去式的变化和过去分词的 变化并不完全相同。我们对它们作了一 个大致的分类。 (注：例子中单词的变 化顺序为：动词原形 → 动词的过去 式 → 动词的过去分词)
9、要学生做的事，教职员躬亲共做； 要学生 学的知 识，教 职员躬 亲共学 ；要学 生守的 规则， 教职员 躬亲共 守。2021/7/282021/7/28Wednesday, July 28, 2021
10、阅读一切好书如同和过去最杰出的人谈话。2021/7/282021/7/282021/7/287/28/2021 1:40:00 AM
book report about it next week for her French class. Every time she is in the library, Sally looks at the many books she
1. A: Would you like something to drink? B: No, thanks. _I_h_a_v_e_j_u_st_d_r_u_n_k__so_m__e_te_a___. (just/ drink some tea)
2. A: I heard you lost your key. _H__a_v_e_y_o_u__f_o_u_n_d_i_t____? (find)
5. A: What do your parents think about
our plan?
B: I _h_a_v_e_n_’_t_t_o_ld__t_h_e_m__y_e. t(not/ tell
them/yet)
4b Fill in the blanks with the correct forms of the words in the brackets.
+ 主语+过去分词 (+ 其他) 2) 特殊疑问词(是句子主语)+have / has+
过去分词(+ 其他)
already和yet都可以作为现在完成时的标 志词，但它们的用法不同。 ◆already一般用于肯定句中。如：
We have already cleaned up our classroom. 注意：already用于疑问句中时通常表 示惊奇。如：
e.g. I haven’t seen her these days. I’ve known Bob for three years. I’ve been at this school for over two years.
时间状语 already, yet, just, ever, never, before
Read the following sentences we have seen.
Have you read Little Women yet? Yes, I have./ No, I haven't. Has Tina read Treasure Island yet? Yes, she has. She thinks it’s fantastic. Have you decided which book to write about yet? Yes, I have. I’ve already finished reading it. It was really good.
Sally _l_o_v_es(love) reading. In the morning she
reads the newspaper and in the evening she
reads books. She ___ already __h_a_s(read) mreoarde than 100 different books. Her favorite
17、儿童是中心，教育的措施便围绕他们而组织起来。2021/7/282021/7/282021/7/282021/7/28
2、Our destiny offers not only the cup of despair, but the chalice of opportunity. (Richard Nixon, American President )命运给予我们的不是失望之酒，而是机会之杯。二〇二一年六月十七日2021年6月17日星期四 3、Patience is bitter, but its fruit is sweet. (Jean Jacques Rousseau , French thinker)忍耐是痛苦的，但它的果实是甜蜜的。10:516.17.202110:516.17.202110:5110:51:196.17.202110:516.17.2021 4、All that you do, do with your might; things done by halves are never done right. ----R.H. Stoddard, American poet做一切事都应尽力而为，半途而废永远不行6.17.20216.17.202110:5110:5110:51:1910:51:19 5、You have to believe in yourself. That's the secret of success. ----Charles Chaplin人必须相信自己，这是成功的秘诀。-Thursday, June 17, 2021June 21Thursday, June 17, 20216/17/2021
kind of books is science fiction. She is
interested in science and technology and
loves to imagine what the world ______ (be)
like in 50 years.
will be
She _f_i_n_is_h_e_d(finish) reading a book about robots last week and ________w_ i(lwl rwitrei)tea
Have you finished your homework already? I can’t believe it.
◆yet一般用于疑问句和否定句中。如： Have you seen her yet? The bus hasn’t come yet.
1. Write the forms of the past tense and past participle: drink _d_r_a_n_k_ _d_r_u_n_k_ see __sa_w___ _s_e_en___ find f_o_u_n_d__ _f_o_u_n_d_ leave __le_f_t __ _l_e_ft___ tell _t_o_l_d__ _t_o_ld___
13、He who seize the right moment, is the right man.谁把握机遇，谁就心想事成。2021/7/282021/7/282021/7/282021/7/287/28/2021
14、谁要是自己还没有发展培养和教育好，他就不能发展培养和教育别人。2021年7月28日星期三2021/7/282021/7/282021/7/28
B: This morning.
4. A: Is your sister going to the movies
with us tonight?
B: No. _____________________பைடு நூலகம்____.
(alreaSdhye/ hseaestahlerefialdmy) seen the film
句式 1. 肯定句：主语 + have / has + 过去分词
(+ 其他) 2. 否定句：主语 + have / has + not + 过去
分词(+ 其他) 3. 一般疑问句：have/ has + 主语 + 过去
分词(+ 其他)
4. 特殊疑问句： 1) 特殊疑问词 (不是句子主语) + have / has