Trịnh Thị Mai Dung
Quang Trung secondary school
UNIT 11: OUR GREENER WORLD
Lesson 3: A CLOSER LOOK 2
Grammar
Articles: Mạo từ
There are two kinds of articles in English: the indefinite article (a / an) and the definite article (the).
Có hai loại mạo từ trong tiếng Anh: mạo từ không xác định (a / an) và mạo từ xác định (the).
We use a / an Chúng tôi sử dụng a / an
- with singular countable nouns when we are talking about them in general. (với danh từ đếm được số ít khi chúng ta đang nói về chúng nói chung.)
Example:
An ant is a tiny animal.
- after the verbs to be and to have. (sau động từ tobe và to have)
Example:
I’m a student. / I have an eraser.
Grammar
Articles
We use the
with singular or plural nouns when we already know them or when they are mentioned for the second time.
Chúng ta sử dụng THE với danh từ số ít hoặc số nhiều khi chúng ta đã biết chúng hoặc khi chúng được nhắc đến lần thứ hai.
Example:
The bike in front of her house is nice.
- with nouns which are unique: với danh từ là duy nhất.
Example:
The air is dirty.
Write a or an.
1.
___ egg
2.
3.
___ sink
___ friend
4.
___ arm
5.
6.
____ onion
____ mouth
7.
8.
____ classmate
____ umbrella
an egg
a sink
a friend
an arm
an onion
a mouth
a classmate
an umbrella
Write a / an or the.
1.
My father is
2.
3.
_______ dolphin is _______ intelligent animal.
4.
I have
5.
My brother likes
_______ Sun keeps _______ Earth warm.
_______ doctor.
a doctor.
The Sun keeps
_______ Earth warm.
the Earth warm.
A dolphin is
_______ intelligent animal.
an intelligent animal.
_______ orange shirt too.
an orange shirt too.
_______ blue pen, not _______ red one.
the blue pen, not
_______ red one.
the red one.
Grammar
Conditional sentences type 1: câu điều kiện loại 1
First conditional sentences describe things which are possible and likely to happen in the present or the future.
Câu điều kiện loại 1mô tả những điều có thể xảy ra trong hiện tại hoặc tương lai.
Example:
If you use less paper, you will save a lot of trees.
If + subject + V (present simple),
If-clause
subject + will / won’t + V (base form)
main clause
Write the correct form of each verb in brackets.
1.
If it (be)
2.
3.
We (save)
much paper.
4.
More people (have)
less water.
5.
If the river (not be)
If we (recycle)
_______ sunny next week, we (go) _______ on a picnic.
is sunny next week, we (go)
_______ on a picnic.
will go on a picnic.
_______ more, we (help) _______ the Earth.
recycle more, we (help)
_______ the Earth.
will help the Earth.
_______ a lot of trees if we (not waste) _______ so
will save a lot of trees if we (not waste)
_______ so
don’t waste so
_______ fresh water if we (use) _______
will have fresh water if we (use)
_______
use
_______ dirty, there (be) _______ more fish.
isn’t / is not dirty, there (be)
_______ more fish.
will be more fish.
Combine each pair of sentences below to make a first conditional sentence.
If the air isn`t fresh, people will cough.
If the water is dirty, a lot of fish will die.
If we cut down trees in the forest, there will be more floods.
If there is too much noise, people will not / won`t sleep.
If there is no water, plants will die.
Fun matching
Work in groups, A and B.
Group A secretly writes five if-clauses on a sheet of paper.
Group B secretly writes five main clauses on another sheet of paper.
Match the if-clauses with the main clauses.
Do they match? Are there any funny sentences?