Choose the correct options

The first conditional with if and unless

1. Match 1-3 with a—c using the article on page 52. 

(Nối 1-3 với a—c sử dụng bài viết ở trang 52)

Situation

1. Unless a catastrophe destroys the Earth,

2. If scientists manipulate human genes,

3. If humans adapt to conditions on another planet,

Result

a. will people pay to have healthier children?

b. the human race won't look the same.

c. we will probably survive.

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2. Choose the correct options to complete the rules.

(Chọn các tùy chọn đúng để hoàn thành các quy tắc)

1. We use the first conditional to talk about a possible event and its result in the future / past.

2. We introduce the situation with if or unless + present / past simple.

3. We describe the result with will and won’t / do and doesn’t + infinitive without to.

4. We use unless to say if... not / if ... when.

5. When the if clause is first / second, we use a comma. When the if clause comes first / second, we don't need a comma.

If the Earth gets too crowded, we'll move to other planete.

We'll move to other planets if the Earth gets too crowded.

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3. Complete the sentences with the first conditional form of the verbs in brackets. Then rewrite sentences 4 - 5 using if.

(Hoàn thành các câu với dạng điều kiện đầu tiên của động từ trong ngoặc. Sau đó viết lại câu 4 - 5 sử dụng if)

If we (survive), our brains (get) bigger.

→ If we survive, our brains will get bigger.

1. If people ______ (live) on other planets, they ________ (miss) the Earth.

2. He ________ (get tired) if he __________ (not rest).

3. We ________ (not look) the same if we _________ (live) on Mars.

4. You _________ (miss) the bus unless you ________ (get up) now.

5. There __________ (be) a catastrophe unless we ___________ (protect) the environment.

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PRONUNCIATION: Sentence stress

4. Listen and repeat the sentences.

(Nghe và lặp lại các câu)

I won't get a job unless I study hard.

They did not want to go dancing with us.

How much cheese should we need?

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might vs will

5. Study the examples and read the rules. Which situation does the writer think is more likely?

(Nghiên cứu các ví dụ và đọc các quy tắc. Tình huống nào mà nhà văn nghĩ là có nhiều khả năng hơn?)

Children born now might live until they're 150.

People will continue to change.

RULES

We use 'might' to make predictions when we aren't certain.

We use 'will' to make predictions when we are certain.

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7. USE IT! Work in pairs. Ask and answer the questions with your own ideas.

(Làm việc theo cặp. Đặt và trả lời các câu hỏi với ý tưởng của riêng bạn)

1. If I tell you a secret, ___________________?

2. What will happen if ____________________?

3. If you're rich in the future, will you _________________?

4. Will you be unhappy if _____________________.

5. If there are trips to other planets, will __________________?

What will happen if you learn to speak English perfectly?

I might move to Australia.

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