八年级英语冀教版Unit4 Look into ScienceLesson 25 [ty](ppt)

2. What’s the meaning of the word “experiment”? An experiment shows what happens.
3. Do you like to do experiments? What experiments have you done?
4. What experiment is Brain going to do? Make a guess.
根据汉语意思完成句子：
1) 汤姆把广口瓶装满了水。 Tom ___fi_ll_e_d___ the jar __w__it_h___ water.
2) 我需要两张纸板。 I need __t_w_o___ _p_i_e_c_es__ __o_f____ _c_a_r_d_b_o_a_r_d_..
3) 我想地板会很快变湿。 I think the floor _w__il_l___ ___g_et___ __w__et___ soon.
Jack put books into his backpack.
His backpack is filled with books.
His backpack is full of books.
2. I cover the top with a piece of cardboard.
= The top is covered with a piece of cardboard.
Unit 4
Look into Science!
Lesson 25
Let’s Do an Experiment!
Have dictation.
Think about it! 1. What’s the meaning of the word “theory”? A “theory” is an idea. A theory predicts what will happen.
An
4. I think the floor will get w_e_te_r_a_n_d__w_e_te_r.
wetter and wetter
5. We need two p_i_e_c_e of cardboard. pieces
6. In spring, the weather gets w_a_r_m__ly_.
6) 把罐子倒过来。_T_u_r_n____ the jar __u_p_s_id_e__ _d_o_w__n__.
A task:
If Brian does the experiment, will the floor get wet? Imagine what will happen. With a partner, make up a dialogue.
● fill the jar with water ● cover the top with a piece of cardboard ● turn it upside down 4. What’s Brain’s theory? 5. Does Danny have the same theory an Brain’s? 6. Why does Danny want to do the experiment outside? 7. Will Brain do the experiment inside? Why? 8. What does Jenny say? prove
4) 我相信汤姆不会来了。 I __a_m____ __s_u_r_e__ Tom won’t come.
5) 我们要做这个实验，并观察一下将会发生什么事情。 We __w_il_l__ ___d_o__ the experiment __a_n_d__ _o_b__se_r_v_e_ what will happen.
Language notes: 1. I fill a jar with water.
fill … with … = put … into… “用……把……装满” be filled with …= be full of … “充满”
Jack filled his backpack with books.
observe: watch carefully
observe + that/what 等引导的从句
observe sb. do/doing sth.. 我看过她跳舞。
I observed her dance. 我走过草地时，看见他正在散步。
When I passed by the grass, I observed him walking.
warm
句型转换，每空一词 1. Brain put water into the jar. (同义句)
Brain __f_il_le_d__ the jar __w__it_h___ water. The jar __w__a_s__ ____fi_ll_e_d_____w_i_t_hwater. The jar __w__a_s__ ___f_u_l_l __ _____o_f__ water. 2. No other people could go. (同义句) _N_o_b_o_d_y_ ____e_ls_e__ could go. 3. He read about this experiment. (否定句) He _d_i_d_n_’_t_ ___r_e_a_d__ about this experiment.
cover … with … “用……把……盖上” 强调动作
be covered with … “被……覆盖”
强调状态
Language notes:
1. Then, I turn the jar upside down. upside n. 上部，上边 right side up “正面朝上”
upside down “向下翻转过来，正面朝下”
That picture is upside down.
You hold the book upside down.
Turn the bottle upside down.
2. I’m not sure.
Sure!
“当然，理应如此”
I am sure.
I am not sure.
be sure of sth. “相信，确信某事”
be sure to do sth. “一定，务必”
be sure + that从句 “认为……一定……”
Language notes: 1. I think the floor will get wet.
get 系动词 “变化” 后加形容词作表语
get longer get warmer get better get wetter … 2. We can prove who’s right. 3. We’ll do the experiment and observe what will happen.
Read quickly and find the answer: What experiment is Brain going to do?
Read carefully and answer the questions: 1. What will Brain do? 2. What will he need to do the experiment? jar 3. What does Brain do about the experiment at first?
Correct the mistakes:
1. I observed him t_o_g_o_out.
go/going
2. – Must I wrFra bibliotekte all the words down now?
-- No, you m__u_st_n_’t. needn’t
3. A_ experiment shows what happens.