Đề bài: hãy viết lại câu thành câu điều kiện loại 1 sao cho nghĩa không thay đổi.

1 you can't visit Moscrow unless you get a visa

=> If you don't get a visa, you can't visit Moscow

2 He doesn't get any information because he doesn't phone immediately

=> If he phones immediately, he will get some information

3 I haven't much money . I can't buy any new clother

=> If I have much money, i can buy new clothes

4 Joan will not stay at school because she doesn't find a job before September

=> If Joan finds a job before September, she will stay at school

1. Viết lại câu sao cho ngĩa không đổi.

a, Although the less was long, we could learn it by heart.

=) In spite of the long less; we could learn it by heart.

b, You can not visit Moscow if you do not get a visa.

=) Unless you get a visa; you cannot visit Moscow.

1. Viết lại câu sao cho ngĩa không đổi.

a, Although the less was long, we could learn it by heart.

=) In spite of the long less, we could learnt it by heart.

b, You can not visit Moscow if you do not get a visa.

=) Unless you get a visa , you can visit Moscow.

1. Viết lại câu sao cho ngĩa không đổi.

a, Although the less was long, we could learn it by heart.

=) In spite of the long less,we could learn it by heart.

b, You can not visit Moscow if you do not get a visa.

=) Unless you get a visa,you cannot visit Moscow.

\(M=1+\dfrac{1}{5}+\dfrac{3}{35}+...+\dfrac{3}{9999}\\ =\dfrac{3}{3}+\dfrac{3}{15}+\dfrac{3}{35}+...+\dfrac{3}{9999}\\ =\dfrac{3}{2}\left(\dfrac{2}{1\cdot3}+\dfrac{2}{3\cdot5}+...+\dfrac{2}{99\cdot101}\right)\\ =\dfrac{3}{2}\left(1-\dfrac{1}{3}+\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+...+\dfrac{1}{99}-\dfrac{1}{101}\right)\\ =\dfrac{3}{2}\left(1-\dfrac{1}{101}\right)=\dfrac{3}{2}\cdot\dfrac{100}{101}=\dfrac{150}{101}\)

Chào em, em tham khảo nhé!

1.l can't finish this task if you don't give me a hand.

=> Unless you give me a hand, I can't finish this task.

2.You will run out of money if you don't stop wasting it.

=> Unless you stop wasting money, you will run out of it.

3.Don't call me unless it is an emergency.

=> If it is not an emergency, don't call me.

4.James will not pass the test unless he studies harder.

=> If Jame doesn't study harder, he will not pass the test.

5.If Jane finishes her work before 6 pm, she will dine out with her friends.

=> Unless Jane finishes her work before 6 pm, she will not dine out with her friends.

Chúc em học tốt và có những trải nghiệm tuyệt vời tại olm.vn!

Xét x=1,x=2,1<x<2,x<1,x>2 

cam on ban nha. ban hoc truong nao vay?

Dịch

You can t visit the United States unless you get visa

Bạn không thể đến thăm Hoa Kỳ trừ khi bạn được cấp thị thực

Choose one sentence that has the same meaning as the root one.

1. You can't visit the United States unless you get a visa.

a. You can't visit the United States if you get a visa.

b. If you don't get a visa, you cannot visit the United States.

c. Although you get a visa, you can't visit the United States.

d. You can visit the United States even if you don't get a visa.

2. Why don't we recycle bottles and cans?

a. We must recycle bottles and cans, mustn't we?

b. What do we recycle bottles and cans for?

c. Shall we recycle bottles and cans?

d. How can we recycle bottles and cans?

3. I'll be happy to give you a lift.

a. Would you mind giving me a lit?

b. Giving me a lift will make you happy

c. Ill be happy if you give me a lift.

d. I don't mind giving you a lift.

4. What do you think I should do?

a. What do you advise me to do?

b. What should I do for you?

c. Why don't you think what I should do?

d. What I do depend on your thinking.

5. My classmate gave this book to me.

a. My classmate was given this book by me.

b. This book was given to me by my classmate.

c. This book was given to my classmate by me.

d. This book was given my classmate by me.

If don't you get a visa, you can't visit the United States.

mnn cíuuu mikk điii ạ 

If you don't get a visa, you won't can visit the UK