Vocabulary: Environment, energy, the city.
Farming, pesticides, deforestation, bypass, pedestrian, campaign, sign, resources, greenhouse, development, warming, desertification, famine…
You have been waiting… Haven´t you?
There are many people… Aren´t there?
They will help you… Won´t they?
She likes you... doesn´t she?
They ate everything... didn´t they?
can/could/be, able to may/might, should/ought to must/have to
You are late… You should apoligize.
He is ill… He ought to go to the doctor.
He is not able to find his glasses… He can´t find them.
We are not allowed to bring mobile phones to school… We may not take them to school.
I think he is a teacher... He might be a teacher.
He has to go with you... He must go.
Be + past perfect
(Always perfect –third column- after the verb “to be”)
My father gave me a present: A present was given to me / I was given a present (by him).
They are building houses: Houses are being built.
You cannot do it: It cannot be done.
Did you tell them to do it?: Were they told to do it?.
Have yoy told them to do it?: Have they been told to do it?.
When did they create it?: When was it created?.
He will finish the work this week: The work will be finished this week.
Revise pages 11,12 and 13 of yor grammar in: http://julioteacher.blogspot.com.es/2014/12/english-grammar.html