高中英语人教版选修7课件：Unit3 Under the sea period 3 grammar

课件18张PPT。The use of v-ingUnit 3 Under the sea 学生能够了解并掌握v-ing 形式的主动式和被动式。
学生能够了解并掌握V-ing 形式的完成式，及其对应的被动式。
本节课是关于动词V-ing 形式的语法课，设计意图是通过当堂讲解和练习来让学生掌握该语法的考点。
首先，通过让学生填表格导入新课，先让学生从形式上认识V-ing形式的一般式和完成式及其对应的被动形式。然后，逐个讲解v-ing 形式作主语，宾语，表语，定语等，并且讲练结合，当堂巩固。最后，课堂检测，既能让学生自我检测，又达到了整体上巩固语法的目的。
(not) doing(not) being done(not) having done(not) having been done V-ing 可作主语、宾语、表语、定语、状语和宾语补足语，但不能单独作谓语。
V-ing 形式表示的动作与主要动词同时发生或发生在主要动词之后，用其一般式; V-ing 形式表示的动作在主要动词之前发生，用其完成时，在具体应用中也常以一般式代替完成式。 1.作主语
★ Swimming is good for health.
★ ______(raise) your hat to a lady is good manners .
★ (kill) by sharks in the sea is a common thing.RaisingBeing killed 2.作表语
★ Teaching is learning. 教学相长
★ My hobby is _______(make) model planes.
★ What worried the child most was
(not, allow) to visit his mother in the hospital makingnot being allowed1).动名词和不定式都可以作主语，动名词作主语表示一般或抽象的多次性行为，不定式作主语往往表示具体的或一次性的动作。如：
Playing with fire is dangerous.
（泛指玩火）
To play with fire will be dangerous.
（指一具体动作）2)V-ing形式和不定式都要有对称性;当主语是不定式时，表语也用不定式；反之，当主语是 V-ing 形式时，表语也用 V-ing 形式。
To see is to believe. = Seeing is believing.
talking to learn e.g. : It is no use crying over spilt milk.覆水难收。It is + adj. + (for sb. ) to do sth.It 作形式主语, 只用V-ing,不用不定式。3).It’s no use (good) doing sth.
It’s a waste of time doing sth. It is a waste of time ___________ (talk) to him .
It is important for me _______________ (learn) English .3.作宾语
V-ing 形式既可作动词的宾语, 也可作介词的宾语。
★We would appreciate hearing from you．
我们会珍惜你的来信。
★The bird escaped ______________ (catch) .
★I feel like __________ (join) the army.
★He was afraid of ____________ (abandon) by us.
being caught joining being abandoned4. 作定语
★The girl standing there is my sister .
★This is a piece of __________ (surprise) news .
★The problem____________ (discuss) now is very important.
★ The farmers ____________ (work) in the fields are tired .
surprising being discussed working5. 作状语
★Hearing the good news, he jumped with joy.
★He sat at the table, _______( read ) China Daily.
★ ______________ (ask) to answer the question, she couldn’t refuse.
★ __________ ( work ) hard, you will succeed .
readingBeing asked Working6. 作宾语补足语
★ I saw people coming and going in the street .
★ I heard her ___________ (sing) a song in her room.
★ You’ll find the topic _____________ (discuss) everywhere now.
singingbeing discussed1) He hurried home , looking behind
from time to time .
2) The building being repaired is our
dormitory .

--- V-ing 一般时和一般时的被动形式1) Having lit a candle , she went out.
2) Having been asked to stay, I couldn’t leave .
3) Having heard this, our teacher expressed her satisfaction .--- V-ing 的完成时和完成时的被动形式_________ (turn) to the right , you will find the place you want .
2. ___________ (ask) to put on performance, she refused .
3. He disliked (interrupt) in his experiment .
4. ________ (learn) new words is useful. TurningBeing asked Learningbeing interrupted 5. _______________ (finish) his work , Henry went home .
6. I apologize for ________________(not, wait) for you .
7. _________________ (not, receive) an answer, I wrote to him again .
8. ____________________ (give) such a good chance, you should catch it .not having waited Not having received Having been givenHaving finished