人教版（2019）选择性必修第二册Unit1Science and Scientists 表语从句课件(21张PPT）
文档属性
| 名称 | 人教版（2019）选择性必修第二册Unit1Science and Scientists 表语从句课件(21张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 196.2KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-11-05 12:19:10 | ||
图片预览
文档简介
(共21张PPT)
Discovering useful structures
The Predicative Clauses
Unit 1 Science and Scientists
谢引
表语从句的定义
在主从复合句充当表语的从句叫
表语从句
谢引
表语从句的判断
What I want to say is that I am tired
She doesn’t know whether she likes him or not.
He was sent to the hospital. That’s bbeeccaauussee hhee wwaass iillll..
It sounds as if somebody was knocking at the door.
The reason why he was late was that he missed the
train this morning .
谢引
系动词后的成分为表语。系动词后的从句为表语从句
系动词主要是be动词（am, is, are, was, were)，意为“是”。其它系动词：
1)持续系动词（表示主语持续或保持一种状况或态度）：keep, remain, stay, stand
2) “像”系动词（表示看起来像）：seem, appear, look
3)感官系动词：look, feel, smell, sound, taste
4)变化系动词（主语变成什么样）：become, grow, turn, fall, get,
go
5)终止系动词（主语已终止动作）：prove, turn out
表语从句的判断
谢引
引导词 用法
从属连词 that 无成分，无意义
Whether 无成分，意为“是否”
连接代词 what, which, who, whom, whose, wh+ever 在从句中充当主语，宾
语，表语，定语
连接副词 how, when, where, why however, whenever, wherever
在从句中充当状语
其它连接词 because, as if ,as though 因为，好像，似乎
表语从句的引导词
谢引
1.This is
I want.
I hate reading
2.My English is limited. This is
English books.
3.The village is
I used to spend my holiday.
I really love the way he behaves.
5.The trouble is
we are short of funds.
6.My problem is
coat is suitable for me.
I want
7.I ‘ d like to start my own business—that’s
to do if I had the money.
will support me.
w_h_a_t
wh_e_r_e
w_h_y
4.It is _b_e_c_a_u_s_e
th_at _
wh_ic_h
w_ha_t
8.What I want to know is _wh_o
即学即练
谢引
表语从句的语法规则
The question is how can I make you understand the knowledge.
The question is how I can make you understand the knowledge.
Rule 1 : 表语从句和宾语从句、主语从句一样，
要用陈述语序：主语+谓语。
谢引
The question is if it is worthwhile to do it.
The question is whether it is worthwhile to do it.
Rule 2 : 表语从句的引导词没有if !!!
只用whether ,不用if 的情况:
Whether to do
Whether……or not
介词后的宾语从句
从句：句首的主语从句；表语从句；同位语从句
表语从句的语法规则
谢引
My proposal is that we (should) start early tomorrow. I propose that we (should) start early tomorrow.
It is proposed that we (should) start early tomorrow.
Rule 3 : 表语从句的虚拟语气
在表示“建议，劝说，命令”的名词idea, advice, suggestion, request, proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should可省略
表语从句的语法规则
谢引
I
y proposal is that we (should) start early tomorrow. propose that we (should) start early tomorrow.
t is proposed that we (should) start early tomorrow.
Rule 3 : 表语从句的虚拟语气
在表示“建议，劝说，命令”的名词idea, advice, suggestion, request, proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should可省略
表语从句的语法规则
M advice, suggestion, proposal, recommendation,
I demand, order, instruction, request, requirement, insistence
decision, idea, plan, wish, desire,
谢引
Dark clouds are gathering. It looks as if it’s going to rain. It seemed as if the night would never end.
Rule 3 : as if/as though 引导的表语从句常跟在look, seem, sound, feel等后面
语气： 若表示真实情况：用陈述语气
若表示非真实情况：用虚拟语气
表语从句的语法规则
谢引
The little boy talks as if he knew everything in the world.
He felt as if he had met this young lady for a long somewhere.
Rule 3 : as if/as though 引导的表语从句的虚拟语气：若跟现在事实不符：过去式（be动词用were）若跟过去事实不符：had done
若跟将来事实不符：would/could+动词原形
表语从句的语法规则
谢引
once.
2. When a pencil is partly in a glass of water, it looks as if it
(be) broken.
(get) more people to attend
(be) a grown-up.
(be) ten years younger.
1. My suggestion is that we _s_h_o_u_l_d g_o_ (go) to hospital at
_we_r_e
3. My idea is that we _s_h_o_u_l_d_g_e_t
the conference.
4. The little girl talked as if she _h_ad_b_e_e_n
5. She looks as if she _w_e_r_e
即学即练
谢引
I couldn’t tell you the truth. It is because I have to keep
my promise.
I am late this morning. That is because I left my bag on the subway.
Your speech is excellent. This is because you prepared
it a lot.
Rule 4 : because引导表语从句通常只用于 “This/That/It is because…”结构中。
表语从句的语法规则
谢引
he couldn’t
bus.
表语从句的语法规则
She was late this morning. That was _b_e_c_a_u_s_e_ she
missed the early bus.
He didn’t found the key. That was _wh_y
open the door.
The reason _wh_y
he was late was _t_h_a_t_ he missed the
谢引
he was
fired.
he is careless and
he was
1.He is careless and irresponsible. That was _wh_y
2.He was fired. That was _b_e_c_a_u_s_e
irresponsible.
3.The reason _w_hy he was fired was t_h_a_t careless and irresponsible.
即学即练
谢引
P5 2. Answer the following questions using the information from the reading passage as well as the predicative clauses.
EXAMPLE
What Was it that John Snow showed to the world
What John Snow showed to the world was how cholera could be overcome.
1. What was Snow’s discovery in two particular
streets in London
Snows discovery in two particular streets in London
was that m_o_r_e t_h_a_n_50_0_p_e_o_p_l_e_die_d in t_e_n_da_y_s_. _
谢引
2. What was Snow determined to find out during the 1854
where
4. What was the finding that Snow announced
outbreak of cholera in London
What Snow was determined to find out was why
_t_he c_h_o_le_ra o_u_tb_r_e_ak w_a_s_s_o_s_e_v_e_re in th_e_t_w_o_p_a_r_ti_c_u_la_r_s_tr_e_e_ts_._
3. What were the exact places(Snow marked on the map ) The exact places Snow marked on the map were
a_l_l_tho_s_e_wh_o_d_i_e_d_h_a_d li_v_e_d
w_a_t_e_r_c_a_r_r_ie_d
Snow's finding was that_t_h_e p_u_m_p
cholera germs..
谢引
P5 3. David is talking to Maria about their scientific research project. First complete David's lines (A-E, using the words in the box. Then put David's lines in the correct order and practice the conversation.
谢引
A: Absolutely ! You may not believe it, but that was happened at the initial stage of our group's research on developing a vaccine for malaria.
B:Yes, it is. And it seemed all the theories were useful, but
the fact was we couldn't persuade one another that one theory was better than another.
C:Exactly The problem was not about all our theories were
equally good, but in deciding. theory to depend upon.
D:We realised that what we cared about was not aspect we needed to develop a theory in, but rather we can reduce the cost of a vaccine without reducing its effect!
E: You're right. At last, we became focused on the key issue, which was we had to Cary out the research in the first place.
as if that what who when How why whose which whether
谢引
_
Maria: This mix of theory and data is one of the key
characteristics of what we call science. David: A
Maria: With your theoretical framework
David:
Maria: Deciding on a theory is definitely of critical importance.
David:
Maria This was when you should have calmed down and got
down to doing some sold work.
David:
Maria: So what happened in the end
David:
Discovering useful structures
The Predicative Clauses
Unit 1 Science and Scientists
谢引
表语从句的定义
在主从复合句充当表语的从句叫
表语从句
谢引
表语从句的判断
What I want to say is that I am tired
She doesn’t know whether she likes him or not.
He was sent to the hospital. That’s bbeeccaauussee hhee wwaass iillll..
It sounds as if somebody was knocking at the door.
The reason why he was late was that he missed the
train this morning .
谢引
系动词后的成分为表语。系动词后的从句为表语从句
系动词主要是be动词（am, is, are, was, were)，意为“是”。其它系动词：
1)持续系动词（表示主语持续或保持一种状况或态度）：keep, remain, stay, stand
2) “像”系动词（表示看起来像）：seem, appear, look
3)感官系动词：look, feel, smell, sound, taste
4)变化系动词（主语变成什么样）：become, grow, turn, fall, get,
go
5)终止系动词（主语已终止动作）：prove, turn out
表语从句的判断
谢引
引导词 用法
从属连词 that 无成分，无意义
Whether 无成分，意为“是否”
连接代词 what, which, who, whom, whose, wh+ever 在从句中充当主语，宾
语，表语，定语
连接副词 how, when, where, why however, whenever, wherever
在从句中充当状语
其它连接词 because, as if ,as though 因为，好像，似乎
表语从句的引导词
谢引
1.This is
I want.
I hate reading
2.My English is limited. This is
English books.
3.The village is
I used to spend my holiday.
I really love the way he behaves.
5.The trouble is
we are short of funds.
6.My problem is
coat is suitable for me.
I want
7.I ‘ d like to start my own business—that’s
to do if I had the money.
will support me.
w_h_a_t
wh_e_r_e
w_h_y
4.It is _b_e_c_a_u_s_e
th_at _
wh_ic_h
w_ha_t
8.What I want to know is _wh_o
即学即练
谢引
表语从句的语法规则
The question is how can I make you understand the knowledge.
The question is how I can make you understand the knowledge.
Rule 1 : 表语从句和宾语从句、主语从句一样，
要用陈述语序：主语+谓语。
谢引
The question is if it is worthwhile to do it.
The question is whether it is worthwhile to do it.
Rule 2 : 表语从句的引导词没有if !!!
只用whether ,不用if 的情况:
Whether to do
Whether……or not
介词后的宾语从句
从句：句首的主语从句；表语从句；同位语从句
表语从句的语法规则
谢引
My proposal is that we (should) start early tomorrow. I propose that we (should) start early tomorrow.
It is proposed that we (should) start early tomorrow.
Rule 3 : 表语从句的虚拟语气
在表示“建议，劝说，命令”的名词idea, advice, suggestion, request, proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should可省略
表语从句的语法规则
谢引
I
y proposal is that we (should) start early tomorrow. propose that we (should) start early tomorrow.
t is proposed that we (should) start early tomorrow.
Rule 3 : 表语从句的虚拟语气
在表示“建议，劝说，命令”的名词idea, advice, suggestion, request, proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should可省略
表语从句的语法规则
M advice, suggestion, proposal, recommendation,
I demand, order, instruction, request, requirement, insistence
decision, idea, plan, wish, desire,
谢引
Dark clouds are gathering. It looks as if it’s going to rain. It seemed as if the night would never end.
Rule 3 : as if/as though 引导的表语从句常跟在look, seem, sound, feel等后面
语气： 若表示真实情况：用陈述语气
若表示非真实情况：用虚拟语气
表语从句的语法规则
谢引
The little boy talks as if he knew everything in the world.
He felt as if he had met this young lady for a long somewhere.
Rule 3 : as if/as though 引导的表语从句的虚拟语气：若跟现在事实不符：过去式（be动词用were）若跟过去事实不符：had done
若跟将来事实不符：would/could+动词原形
表语从句的语法规则
谢引
once.
2. When a pencil is partly in a glass of water, it looks as if it
(be) broken.
(get) more people to attend
(be) a grown-up.
(be) ten years younger.
1. My suggestion is that we _s_h_o_u_l_d g_o_ (go) to hospital at
_we_r_e
3. My idea is that we _s_h_o_u_l_d_g_e_t
the conference.
4. The little girl talked as if she _h_ad_b_e_e_n
5. She looks as if she _w_e_r_e
即学即练
谢引
I couldn’t tell you the truth. It is because I have to keep
my promise.
I am late this morning. That is because I left my bag on the subway.
Your speech is excellent. This is because you prepared
it a lot.
Rule 4 : because引导表语从句通常只用于 “This/That/It is because…”结构中。
表语从句的语法规则
谢引
he couldn’t
bus.
表语从句的语法规则
She was late this morning. That was _b_e_c_a_u_s_e_ she
missed the early bus.
He didn’t found the key. That was _wh_y
open the door.
The reason _wh_y
he was late was _t_h_a_t_ he missed the
谢引
he was
fired.
he is careless and
he was
1.He is careless and irresponsible. That was _wh_y
2.He was fired. That was _b_e_c_a_u_s_e
irresponsible.
3.The reason _w_hy he was fired was t_h_a_t careless and irresponsible.
即学即练
谢引
P5 2. Answer the following questions using the information from the reading passage as well as the predicative clauses.
EXAMPLE
What Was it that John Snow showed to the world
What John Snow showed to the world was how cholera could be overcome.
1. What was Snow’s discovery in two particular
streets in London
Snows discovery in two particular streets in London
was that m_o_r_e t_h_a_n_50_0_p_e_o_p_l_e_die_d in t_e_n_da_y_s_. _
谢引
2. What was Snow determined to find out during the 1854
where
4. What was the finding that Snow announced
outbreak of cholera in London
What Snow was determined to find out was why
_t_he c_h_o_le_ra o_u_tb_r_e_ak w_a_s_s_o_s_e_v_e_re in th_e_t_w_o_p_a_r_ti_c_u_la_r_s_tr_e_e_ts_._
3. What were the exact places(Snow marked on the map ) The exact places Snow marked on the map were
a_l_l_tho_s_e_wh_o_d_i_e_d_h_a_d li_v_e_d
w_a_t_e_r_c_a_r_r_ie_d
Snow's finding was that_t_h_e p_u_m_p
cholera germs..
谢引
P5 3. David is talking to Maria about their scientific research project. First complete David's lines (A-E, using the words in the box. Then put David's lines in the correct order and practice the conversation.
谢引
A: Absolutely ! You may not believe it, but that was happened at the initial stage of our group's research on developing a vaccine for malaria.
B:Yes, it is. And it seemed all the theories were useful, but
the fact was we couldn't persuade one another that one theory was better than another.
C:Exactly The problem was not about all our theories were
equally good, but in deciding. theory to depend upon.
D:We realised that what we cared about was not aspect we needed to develop a theory in, but rather we can reduce the cost of a vaccine without reducing its effect!
E: You're right. At last, we became focused on the key issue, which was we had to Cary out the research in the first place.
as if that what who when How why whose which whether
谢引
_
Maria: This mix of theory and data is one of the key
characteristics of what we call science. David: A
Maria: With your theoretical framework
David:
Maria: Deciding on a theory is definitely of critical importance.
David:
Maria This was when you should have calmed down and got
down to doing some sold work.
David:
Maria: So what happened in the end
David: