新译林版九年级下册英语 Unit 4 Grammar课件

of 27. ( when )
Yuri Gagarin became the first man to go into outer space
____________________________.
3.Pewohpelenmhieghwtams o2v7e to another planet in the future because the
新译林版九年级下册英语 Unit 4 Grammar课件
科 目：英语 适用版本：新译林版 适用范围：【教师教学】
Unit 4 Life on Mars
Grammar
第一页，共三十二页。
新课讲解
状语从句和简单句之间的转换 我们可以用介词短语把状语从句转换为简单句。
1. because 引导的原因状语从句用短语because of可转换成简单句。
on Mars.
第十五页，共三十二页。
新课讲解
Many people are sure that some plants can produce enough water on mars, aren’t they?
No, nobody is sure _w__h_e_t_h_e_r_a_n_y__p_la_n__ts_c_a_n__p_r_o_d_u_c_e___ e_n_o_u_g_h_w__a_te_r_____________________ on Mars or not.
第十二页，共三十二页。
新课讲解
Many people believe (that) we will live on the planet Mars by the year 2100.(改为否定句) Many people don’t believe (that) we will live on the plan√et Mars by the year 2100. Many people believe (that) we will not live on the planet Mars by
第十一页，共三十二页。
新课讲解
Object clauses introduced by ‘that’ People think (that) robots will do most of our work. Many people believe (that) we will live on the planet Mars by the year 2100. Many people are sure (that) they will have more time for their hobbies. From the sentences, we know (that) an object clause can be put after some __v_e_r_b_s_, such as ‘think’, ‘believe’, ‘know’, or after some _______a_d_je_c_t,ivseusch as ‘sure’, ‘certain’.
People might move to another planet in the future
because of the rapid increase in population on the Earth
第七页，共三十二页。
新课讲解
4.It would be funny to play football on Mars because of the low gravity. (because)
第六页，共三十二页。
新课讲解
1.Neil Armstrong took his first flight when he was only six. ( at the
age of )
___N_e_i_l_A_r_m__s_tr_o_n_g__to_o_k__h_i_s_f_ir_s_t_f_li_g_h_t_a_t_t_h_e_a_g_e_o_f__si_x. 2.Yuri Gagarin became the first man to go into outer space at the age
From the two sentences, we know that we can use ____i_f _ or __w_h__et_h_e_r__ to introduce an object clause when it expresses a ‘yes/no’ question. When we see the word ‘or’, we can only use ‘whether’.
He was late for school because it rained heavily. He was late for school because of the heavy rain.
第二页，共三十二页。
新课讲解
2. if not/no引导的条件状语从句可借助without短语转化为 简单句。 Humans cannot survive if there is no food, water or oxygen. Humans cannot survive without food, water or oxygen.
第十六页，共三十二页。
新课讲解
We don’t know/are wondering if/whether any plants can grow on Mars. Nobody is sure whether any plants can produce enough water on Mars or not.
第八页，共三十二页。
新课讲解
宾语从句和简单句之间的转换 我们可以用介词把状语从句转换为简单句。 The photos remind me that I travelled to the UK five years ago.
The photos remind me of my trip to the UK five years ago. 常用的一些动词和介词的搭配有：
第四页，共三十二页。
新课讲解
4. so that引导的目的状语从句可用“in order to”或“so as to”转换
为简单句。
He decided to buy a camera online so that she could receive it soon. She decided to buy a camera online in order to/ so as to receive it soon.
4. We all know that Mars is a planet in the solar system. 5. The journey to Mars could take only a very short time in space
shuttles that travel at half the speed of light. 6. Some scientists do not believe that the journey to Mars will be
第九页，共三十二页。
新课讲解
What do many people think of the life by the year 2100?
They believe _(_t_h_a_t)_w__e_w__il_l_l_iv_e_o_n__t_h_e_p_l_a_n_e_t_M__a_r_s by the year 2100.
第十页，共三十二页。
新课讲解
Who will do most of the work on Mars?
People think _____(_t_h_a_t_)_r_o_b_o__ts__w_i_l_l_d_omost of our work. And they are sure _______________(t_h_a_t_)_thtiemyewfoirllthheaivrehobbies.
_M_e_a_l_s _w_il_l_n_o_t_b_e_a_s_t_as_t_y_a_s_t_h_ey__a_re__to_d_a_y_________________
_w_i_t_h_o_u_t_f_r_e_s_h_f_o_o_d___.
6.Without special boots , you cannot walk on Mars. ( if …… not ) _Y_o_u__c_a_n_n_o_t_w_a_l_k__o_n_M__a_r_s_i_f_y_o_u__d_o_n_o_t__w_e_a_r____s_p_e_c_ia_l_b_o_o_t.s
___It__w_o_u_l_d__b_e_f_u_n_n_y__t_o_p_l_a_y_f_o_o_t_b_a_l_l _o_n__M__a_rs___________
___b_e_c_a_u_s_e__th__e_g_r_a_v__it_y__is__lo__w_.
5.If there is no fresh food ,meals will not be as tasty as they are today. ( without)
第五页，共三十二页。
新课讲解
5. so…that…引导的结果状语从句的可用“…enough to do” 结构 变成简单句。 This hall is so large that it can hold 2000 people. This hall is large enough to hold 2000 people.
R2.eAmrinedyosuomceerbtoadiny tohfa…t T. 使om某is人sa想ti起sfi…ed…w.ith the plan?
Be sure/certain about … 对……确信
Are you certain about Tom’s satisfaction with the plan?
not’ before ‘think’ and ‘believe’.
第十三页，共三十二页。
新课讲解
Try to find out whether it is an object clause or not. 1. These plants will produce food and oxygen that we need to live
population on the earth is increasing rapidly.
(because of )
_________________________________________________
_________________________________________________.
on Mars.
2. Scientists will develop plants that can grow on Mars.
3. People think that humans on Mars have to wear special boots to make themselves heavier.
第三页，共三十二页。
新课讲解
3. 时间状语从句可借助介词短语转化为简单句。 I could swim when I was eight years old. I could swim at the age of eight. He went home after he finished his work. He went home after finishing his work.
very comfortable.
第十四页，共三十二页。
新课讲解
Can any plants grow on Mars now?
We don’t know/are wondering/are not sure _if_/w__h_e_t_h_e_r_a_n_y__p_la_n_t_s_ _c_a_n_g_r_o_w____________