book 6 unit 3 grammar item the use of it period 2

课件29张PPT。homeworks:你有必要参加会议。（necessary）
这样做是不对的。(no good)
两天完成这项工作不是很容易。(easy)
It’s necessary that you should be
present at the meeting.It is no good doing that .It is not easy to finish the work in two days.回顾：
It 在作引导词时，常用来代替不定式，动名词或名词性从句作形式主语。It`s not easy to get him ____change his mind.
It’s no good _____(copy)others’ homework.Is it worth ________(read)this book?to copyingreadingIt is likely _______he will succeed.thatIt is important that we _____
(learn) English well. 　　
It is necessary that he _____
(remember) these wordslearnremember该句型和上一个同属一个句型。由于主句中的形容词不同，
that 后的从句中要用虚拟语气（should + 动词原形），
should 可以省去。建议记住该句型中的形容词。_______________ (据说)he has come to
Beijing.
　　 _______________（据报道） another
man-made　satellite has been put
into orbitIt is said thatIt is reported that该句型中的it 仍是形式主语，真正主语是 that 引导的
主语从句。
该结构常译为“ 据说（据报道，据悉……）”。It is suggested that the meeting __________
put off. 　
It was ordered that we __________ there
in two hours. ( should ) be( should ) arrive主句中的过去分词是表示请求，建议，命令等词时，that
后的从句要用虚拟语气（should + 动词原形），should
可以省。常译为“ 据建议；有命令……）”。It ’s high time that we _____(have) lunch.
=It’s high time ____us to have lunchhad/should havefor____ is known to everybody, the moon travels
round the earth once every month.试比较：
It is known to everybody that the moon…As1. I don’t think it possible to master a foreign
language without much memory work.
2. She thought it no use telling him about that.
3. They kept it quiet that he was dead.
4. She made it clear that she disagreed.
5. I enjoy it when the sun shines.
1. I don’t think it possible to master a foreign
language without much memory work.
2. She thought it no use telling him about that.
3. They kept it quiet that he was dead.
4. She made it clear that she disagreed.
5. I enjoy it when the sun shines.
1. I don’t think it possible to master a foreign
language without much memory work.
2. She thought it no use telling him about that.
3. They kept it quiet that he was dead.
4. She made it clear that she disagreed.
5. I enjoy it when the sun shines.
形式宾语真正宾语 总结该句型中的it 作形式宾语：为了记忆方便我们可称该句型为"6123结构”.

e.g.
He make it a rule to get up before dawn.6 →指主句中
常用的动词：
believe，
consider，
find， feel,
make， think. 1→ 指的是
形式宾语it；2 →指的是
宾补的两种
形式：形容
词或名词3 →指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句
我发现戒烟很难。(find)
他认为告诉老师是没用的。(think)
我想很奇怪他昨天没有来。（feel）I found it very difficult to quit smoking.She thought it no use telling him about that.I felt it strange that he didn’t come last night 【知识要点小结】
It 在作引导词时，常用来代替不定式，动名词或名词性从句作形式宾语。Exx.
I found it difficult ________（解释）to him what happened.George made it clear _____he disagreed.to explainthatExx.
_____________when people talk with their
mouths full.
You may ______________that they will
support you. 你可以靠他们的支持。【知识要点小结】
主语+ 动词 + it
此种用法的动词有：like, dislike, hate,
appreciate, depend on等。我讨厌经常下雨。I hate itdepend on it 【知识要点小结】
若题干中没有并列连词but, and等,就可用关系代词which来指代前面整个句子。若出现并列连词,就可用it来指代前一个分句。
The boy failed in the English exam, ____made his mother very angry.
= The boy failed in the English exam and__ made his mother very angry.whichit He hasn`t slept at all for three days.
___________ he is tired out.
“难怪------”It is no wonder固定句型It seems that some young people look attractive
When they smoke .2. Some young people think they look attractive
when they smoke.It is believed that smoking causes ccancer.Rewrite the following sentences, using “It’s … that”.3. Most people believe smoking causes cancer.Giving up smoking is difficult to do.It is difficult to give up smoking.It is astonishing that China produces one third
of the world’s cigarettes.5. China produces one third of the world’s cigarettes.It is illegal to advertise cigarettes in this country.6. You are not allowed to advertise cigarettes in
this country.4. Don’t try to quit on a stressful day.It’s no use trying to quit on a stressful day.It was a dark and stormy when the old man
started his journey.8. The night was dark and stormy when the old man started his journey.It is likely that you could suffer from bad health
if you keep smoking.9. You could suffer from bad health if you keep
smoking.7. My father has quit smoking at last.It is wonderful that my father has quit smoking
at last.___________________in TaiShan when
the leafs turn green.我喜欢台山的春天当树叶变黄的时候。I like it in the springApplying "It"My journey__________________________
when I went to Sihuashan .
I chose to go there ____ bike because
__________________________________
and ____________________
____the lawn
It was March 1st, 2007by it is convenient to travel by bike时间 it is comfortable to sitonKey words:
Convenient /
comfortableI enjoyed many games very much such as …The Imperial PalaceNo matter where I went,
_________________________to see
the sightseeing of the park.it was excitedIt impressed me most when I was beside ________.
______________. (weather)It was a nice daythe fish pondThe endIt seems that some young people look attractive
When they smoke .2. Some young people think they look attractive
when they smoke.It is believed that smoking causes ccancer.Rewrite the following sentences, using “It’s … that”.3. Most people believe smoking causes cancer.Giving up smoking is difficult to do.It is difficult to give up smoking.It is astonishing that China produces one third
of the world’s cigarettes.5. China produces one third of the world’s cigarettes.It is illegal to advertise cigarettes in this country.6. You are not allowed to advertise cigarettes in
this country.4. Don’t try to quit on a stressful day.It’s no use trying to quit on a stressful day.It was a dark and stormy when the old man
started his journey.8. The night was dark and stormy when the old man started his journey.It is likely that you could suffer from bad health
if you keep smoking.9. You could suffer from bad health if you keep
smoking.7. My father has quit smoking at last.It is wonderful that my father has quit smoking
at last.It will be several months _______Beijing holds the
2008 Olympic Games.beforeIt + be +时间短语+ before… 说明一件事与另一
件事的间隔。 It ___11 o`clock at night _____16 armed men came to my house. waswhenIt + be +时间短语+ when…说明某事发生的时间。 It`s 3 years _____I had a job.sinceIt + be +时间短语+ since…说明某事发生在多久以前It was _________(因为)the water had risen that they couldn’t cross the river.becauseIt is/ was … that 强调句型的被强调部分如果是原因状语从句，只能由because 引导。one / it 的用法区别：
We needed a new cupboard for the kitchen.
So Peter made ____ from some wood.
oneMeeting my uncle after all these years was an
unforgettable moment, _____ I will always
treasure. one注意not…until 句型的变化. 请把下列句子改成It 句型和倒装句：She didn’t remember the date until she had arrived home.=________________she had arrived home that she remembered the date.=_______she had arrived home ____she remember the date.It was not untilNot untildid