1 Read the article. What is the problem Boyan Slat is trying to solve? What is his solution?

(Đọc bài viết. Vấn đề Boyan Slat đang cố gắng giải quyết là gì? Giải pháp của anh ấy là gì?)

There are very few people who come up with a world- changing idea during their lifetime - but to come up with it while you are still a student is even more unusual. But that is exactly what Dutch teenager Boyan Slat has done. Environmental Impact magazine interviewed him.

EIM: What is the problem that you identified?

BS: Every year, millions of tonnes of plastic end up in the oceans, where the waves break it up into tiny pieces. This pollution kills millions of sea creatures every year.

EIM: Hasn't there been any action to stop it?

BS: Very little, even though campaigners have been calling for it for years.

EIM: And you've worked out a way to tackle the problem.

BS: Yes. My invention would float on the surface of the ocean and gradually clean it up by collecting around 20 billion tonnes of plastic from the water.

EIM: What would you do with all that plastic?

BS: Rather than throwing this away, it could be recycled and sold for about $500 million a year.

EIM: And how would your floating invention be powered?

BS: It would take energy from the waves and sun, so it would never run out of it!

2 Circle the correct words to complete the Learn this! box. Use the examples in the box and the article to help you.

(Khoanh tròn những từ đúng để hoàn thành bài tập khung Learn this! Sử dụng các ví dụ trong hộp và bài viết để giúp bạn.)

LEARN THIS! Separable and inseparable phrasal verbs

a Two-part phrasal verbs can be separable or inseparable. With separable phrasal verbs, the object can come before or after the particle (for, up, with, etc.).

We must work out the answer.

OR We must work the answer out.

b When the object is a pronoun (her, it, them, etc.) it can only come ¹ after/before the particle.

We must work it out.

c With inseparable phrasal verbs, the object always comes ² after/before the particle, even when it is a pronoun.

She looks after her dad. She looks after him.

d Three-part phrasal verbs are always ³ separable / inseparable.

We won't run out of energy. We won't run out of it.

3 Find the phrasal verbs in the article. Are they separable or inseparable? How do you know?

(Tìm các cụm động từ trong bài viết. Chúng có thể tách rời hay không thể tách rời? Làm sao bạn biết?)

4 DICTIONARY WORK Read the dictionary entries. Then answer the questions below.

(Đọc các mục từ điển. Sau đó trả lời các câu hỏi dưới đây.)

PHR V look after sb/sth/yourself to be responsible for or take care of sb/sth/yourself: I'll go back to work if I can find somebody to look after the children. - The old lady's son looked after all her financial affairs.

look down on sb/sth to think that you are better than sb/sth

look sth up to search for information in a book: to look up a word in a dictionary

look up to sb to respect and admire sb

1 Which phrasal verbs are two-part and which are three-part?

2 Which two-part phrasal verb is separable and which is inseparable? How do you know?

5 VOCABULARY Match the phrasal verbs below with definitions 1-9. Is each phrasal verb separable or inseparable?

(Nối các cụm động từ dưới đây với các định nghĩa từ 1-9. Mỗi cụm động từ có thể tách rời hay không thể tách rời?)

Separable and inseparable phrasal verbs

1 stop doing something give sth up (separable)

2 mention something

3 be similar to somebody (a parent or older relative)

4 rely on somebody

5 delay somebody

6 invite somebody to go on a date (e.g. to the cinema)

7 find something accidentally

8 become something else

9 cancel something

6 Complete each question using a phrasal verb from exercise 4 or 5. Complete the follow-up question with the same phrasal verb and the correct pronoun.

(Hoàn thành mỗi câu hỏi bằng cách sử dụng một cụm động từ từ bài tập 4 hoặc 5. Hoàn thành câu hỏi tiếp theo với cùng một cụm động từ và đại từ đúng.)

1 Which person from history do you _________ to?

Why do you _________?

Which person from history do you look up to? Why do...

(Bạn ngưỡng mộ người nào trong lịch sử? Tại sao...)

2 Which food or habit would you like to _________?

Why do you want to _________?

3 If you could _________ a famous person, who would you choose?

Why would you want to________

4 Have you ever _________ some money in the street?

If so, what did you do when you _________?

5 Which member of your family do you _________?

In what way do you _________?

7 SPEAKING Work in pairs. Ask and answer the questions and follow-up questions from exercise 6.

(Làm việc theo cặp. Hỏi và trả lời các câu hỏi và câu hỏi tiếp theo từ bài tập 6.)