高二英語The environment教案
a.we did not make b.having not make c we had not made d.not having made
2.european football is played in 80 countries,-------it the most popular sport in the world.
a.making b makes c made dto made
3.-------what the situation would be like ,they decided to keep silent.
a. having not know b knowing not c.not know d.not knowing
step 2 verb-ing phrases
1. verb-ing phrases can express
*time
seeing the big snake ,the girl was almost frightended to death.
=when she saw the big snake,………
*reason
being a student,i must work hard.
=because i am a student, i must work hard.
*result
the factory keeps releasing smoke,making the air dirty.
=the factory keeps releasing smoke.as a result ,the air is made dirty.
*condition
preparing fully, we can achieve great things
=if we prepare fully, we can ….
2. we can also use the pattern conjunction+verb-ing to express time.the common conjunctions are when,whenever,while,once,and until.
we have to take environmental protection into consideration when developing the economy.
3. the understood subject of a verb-ing clause is usually the same as the subject of the main clause
he travelled on the plane like this, keeping the tortoise hidden in a blanket.
=when he travelled on the plane like this , he kept the tortoise hidden in a blanket.
4. we put not before the verb-ing to create its negative form
he sat there, not knowing what to say.
step 3. practise p31
step 4 exercise:
homework: 1.review verb-ing phrases
2. finish the exercise