名词性从句精品课件

or not.
whether /if
5. I don’t know ________ or not he is
well.
whether
8. I don’t know _______ to go.
whether
doubt问题
1. I doubt if / whether he will pass the exam.
宾语从句
3. The truth is that I have been there.
表语从句
4. The fact that she was late surprised us.
同位语从句
1. 为什么叫名词性从句？ __整_个__从__句__相__当_于__一__个__名__词___ 2. 为什么要有名词性从句？
名词能做的成分,从句都能 做
从句表达的意思比名词复杂得多
比较: The man looked around. 那人看了看四周. (名词作主语)
That the boy failed again in the exam disappointed his mother.
那孩子考试又不及格令他母亲很失望. (从句作主语)
Note: It is important/necessary/natural/our duty/essential/strange that sb (should) do sth. 固定句型, should可以省略
翻译: 真奇怪他今天竟然迟到了. It is strange that he should be late today.
2. I don’t doubt that we will win the match.
3. Do you doubt that he did it on his own?
肯定句中用 if / whether 否定句中用 that 疑定句中用 that
1. I doubt i_f_/_w_h_e_t_h_e_rhe is telling the truth. 2. We never doubt ___t_h_a_t___ the plan will be carried out . 3. Does he doubt ___t_h_at____ you are from Austria? 4. I’m doubtful i_f_/_w__h_et_h_e_r he will agree to this.
It is a wk.baidu.comity that we can’t go swimming.
2. 碰巧那天我外出了.
It happened that I was out that day.
happen只有 it 句型
3. 他考试肯定会考好.
It is certain that he will do well in the exam.
2.注意 whether和if的使用区别
1).whether和if都可以引导宾语从句 a..当whether后紧跟or not时,不用if.
eg: I don’t know whether or not I will stay.
b.介词后面的宾语从句不能用if. eg: I worry about whether I hurt
他们就是这样赢得这场比赛的.
这就是…的原因
This is how….
3. This is why she got up so early this morning.
这就是…的方法
这就是她为什么今天早上起得这么早的原因.
1. 我们就是这样克服困难的.
This is / That was how we overcame the difficulties.
2. 那就是他昨天缺席的原因.
That is why he was absent yesterday.
3. 这就是我们上星期碰头的地方.
This is where we met last Sunday.
This is 总是现在时 That is 表示性质 That was 指过去动作
宾语从句
宾语从句中的连接词that在以下三种情况下不 能省略：
2. 事实是他们靠自己完成了所有的任务.
this year.
→ It is a fact that they finished all the work by themselves.
√
3. 碰巧他们已经参加过军训了.
→ It happened that they had had their military training.
同样作主语，从句可以表示较复杂的含义,一般是个动作或性质
I know him. I know that he is writing his composition in his room
我知道他在房间里写作文. 从句的特征:
是一个句子,有一个引导词,引导词做从句的一个成分 (that 除外)
主语从句 位于句首
her feeling.
Practice time
if / whether
1. I asked her _i_f_/_w__h_e_th_e_r she had a bike.
3. We’re worried about ________ he is
safe.
whether
4. I don’t know ___________ he is well
5. It has been found (has been proved,can be seen,must be pointed out) that …已发现( 已证明,可以看出,需指 出)…
用 it 句型翻译:
1. 据说今年高一学生要学新教材.
→ It is said that the Senior Grade one students will learn a new text
4. 众所周知, 比尔 ·盖茨是世界上最富有的人.
→ It is well-known that Bill Gates is the richest person in the world.
5. 我们应该养成好的学习习惯这很重要.
→ It is important that we (should) form a good habit of studying. √
名词性从句
主语从句
宾语从句
表语从句 同位语从句
主语从句在句中做------ 主语 表语从句在句中做------ 表语
宾语从句在句中做------ 宾语 同位语从句在句中----- 同位语
1. That he will come is certain.
主语从句
2. I know that he will come.
3. It is well-known ( reported, recorded, estimated,said, believed) that…众所周知( 据报道,,据记载,据说,据估
4. 计 It t)u…rns out ( seems, happens, appears…) that… 结果 是 ( 似乎是, 碰巧是, 好象是…)…
1. It is clear (necessary, important, possible,remarkable that… 很清楚（必要, 重要,可能, 值得注意等)…
2. It is a fact (a good thing, good news…) that … 事实是 ( 好事是,好消息是…)…
strange不省略should为好
表语从句 系动词后面
从 句 同主语从句 (11个), 外加as if / 引导词: as though,
1. The truth is that he has never been to the countryside.
实际情况是他从未去过农村.
that 一般不省略
宾语从句经常做介词的宾语
that 从句只跟在 except,but, in ,besides, save五个介词后面
1. The Swede stood still, except __th_a_t_ his lips moved slightly.
2. She is not satisfied with w__h_a_t she has achieved.
Details
令我惊讶的是在这儿见到他.
What “什么”, “所….
3. When he will come is unknown . 的”
他什么时候来不清楚.
When “什么时候”
4. Whether he is coming doesn’t matter much.
Details Details
他来不来没什么要紧的
主语从句不用 if Details
5. It remains a secret how they climbed up the mountain.
他们是怎么登上山顶的仍是个秘密.
主语太长了!放到句尾
主语从句的位置 1.在句首 2.主语较长时通常放在后面,句首主语用 It
It 作主语的常用句型有:
2. The question is whether w can finish the experiment by Friday. 问题在于我们能否在明天下午之前完成这项实验. 表语从句不用 if
3. It looks as if it were going to rain. as if /as though从句常表示
• （1）当that 从句与另一名词性从句并列作 宾语时，第二个that不能省；
• （2）当that作介词宾语时，that不可省掉。 • （3）用it做形式宾语的宾语从句 • Everyone knew what happened and that she
was worried. • The reason lies in that she works harder than
4. 据说他已告诉了她一切.
It is said that he told her everything.
It is said只有 it 句型
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注意: It looked that he was right. ( × ) 可以说: It looks as if….
用形式主语 it 的主语从句常见结构
好象看上去要下雨似的. (其实不会)
不真实的情况
又比如:
She talks as if /as though she had been there before . 她说话的口气好象以前去过那儿似的.
4. This school is no longer what it was before. 这所学校已不再是从前的那个样子了. what =the thing that
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注意下列表语从句中where, how, why 的译法
1. This is where Lu Xun once lived.
固定句型:
这就是鲁迅曾经住过的地方.
This is where…
这就是…的地方
2. That was how they won the match.
This is why …
从 句 that whether who whom whose 引导词: what which when where why how
1. That he knows Japanese is known to all.
他懂英语,这一点大家都知道
That无词义,不可省略
2. What surprised me was to see him here .
the others do.
whether与if的辨用
• 表“是否”时，在下列情况下用whether。
• a. 主语从句 b. 表语从句 c. 同位语从句 e. 介词后的宾语从句 f.后接动词不定式 (whether to do sth.) g .whether or not 连在一起引导宾语从 句时不用if
1. It + be +形容词 + that 从句 2. It + be +名称词组(duty/pity..) + that 从句 3. It + be + 过去分词(said/thought..) + that 从句 4. It +不及物动词(seem/happen..) + that 从句
1. 真可惜我们不能去游泳.