Read the Learn this! box. Complete the examples and rules. How many more examples of each tense can you find in the article?

7. Look at the highlighted first conditional sentence in the text in exercise 6, and read the Learn this! box below. Complete rule a with present simple and will + verb. Then find two more examples in the text.

(Nhìn vào câu điều kiện loại 1 được tô nổi lên trong bài đọc ở bài số 6, và đọc hộp Learn this! ở dưới. Hoàn thành quy tắc a với thì hiện tại đơn và will + động từ. Sau đó tìm thêm hai ví dụ khác trong bài đọc.)

LEARN THIS! The first conditional(Câu điều kiện loại 1)

a. We use the first conditional to predict the result of an action. We use the (1) _____ to describe the action, and (2) _____ to describe the result. 

If I get the job, I'll have to move to New York.

b. The if clause can come before or after the main clause. If it comes after, we don't use a comma. 

I won’t take the job if it isn't challenging enough.

Read the Learn this! box and complete the rules. Use the dialogue to help you. How many examples of this tense are there in the dialogue?

Find all the examples of the past simple and the present perfect in the article. Complete the rules in the Learn this! box below with present perfect or past simple. Then underline an example of each rule in the article.

LEARN THIS! Present perfect and past simple

a. We use ¹___________ to talk about a specific occasion in the past.

b. We use ²___________ to talk about a specific period of time that is still continuing.

c. We use ³___________ to say how long a situation has existed, often with for, since, or how long.

d. We use ⁴___________to talk about an event that has a strong connection with the present, often with just, already, or yet.

e. We use ⁵___________to talk about an experience at an unspecified time in the past, often with ever or never.

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

Study the plural forms below. Then complete rules a-f in the Learn this! box with the correct endings. Then match each spelling variation (g-i) with one of the nouns below.

Complete the article below with the correct form of the verbs in brackets. Use the first conditional. In gaps 4 and 6, use a modal verb to make the prediction less certain.

Some animals, like lizards and worms, have an amazing ability to grow new body parts if they lose them. Salamanders can grow new legs and some worms can re-grow every part of their body, including their head! If scientists ¹___________ (can) discover how this happens, in theory it ²___________ (be) possible to re-grow human body parts too. Very few scientists are working on this problem now, but if governments ³___________ (start) to spend more money on research, then this dream ⁴___________ (become) a reality. Amazingly, some worms have no limit on lifespan, as they continually re-grow their bodies as they age. So if we ⁵___________ (learn) to repair human limbs and organs, it ⁶___________(be) possible to prevent us from dying. But that is a long way in the future.

1. Study the examples in the table. In your notebook, complete the Rules with condition and result.

(Nghiên cứu các ví dụ trong bảng. Trong sổ tay của bạn, hãy hoàn thành các Quy tắc với điều kiện và kết quả.)