What is As long as? Meaning and detailed usage in English

1. What is As long as?

As long as is an English phrase meaning “if, as long as, provided that” used to indicate a condition or requirement that must be met for something to happen or be evaluated.

For example:

• As long as you finish your homework, you can go out to play. (Miễn là bạn hoàn thành bài tập, bạn có thể ra ngoài chơi.)
• I will support you as long as you remain honest and dedicated. (Tôi sẽ ủng hộ bạn miễn là bạn luôn trung thực và tận tụy.)

2. As long as structure in English

The As long as structure is extensively used in conditional sentences, considered a subordinating conjunction that connects two clauses together.

Furthermore, as long as has its most common meaning as “provided that”, used to express an action occurring only if another action happens.

The structure of as long as is as follows:

as long as + clause 1, clause 2
or Clause 1+ as long as+ clause 2

In this structure, as long as is followed by a condition that another action or event must comply with or depend on.

For example:

• The event will continue as planned as long as the weather is good. (Sự kiện sẽ tiếp tục như dự định miễn là thời tiết đẹp.)
• You can borrow my car for the weekend as long as you return it by Sunday evening. (Bạn có thể mượn xe của tôi cho cuối tuần miễn là bạn trả lại vào chiều Chủ Nhật.)

3. Equivalent structures to as long as

3.1. So long as structure

The as long as structure also shares the same meaning as So long as. Both phrases mean “provided that, on condition that” and are often used interchangeably.

Ví dụ: As long as you keep practicing, you’ll continue to improve your skills. (Miễn là bạn tiếp tục luyện tập, bạn sẽ tiếp tục cải thiện kỹ năng của mình.)

Tuy nhiên, Khi sử dụng trong mẫu câu so sánh ngang bằng, As long as mang nghĩa là “dài bằng”, diễn tả về độ dài bằng nhau của hai đối tượng được nhắc tới trong câu.

Ví dụ: The queue at the supermarket was as long as the line at the movie theater. (Hàng đợi tại siêu thị dài bằng hàng đợi ở rạp chiếu phim.)

3.2. Provided (that)/ Providing (that)

Similar to as long as, this phrase also expresses a condition or requirement for another action or event to occur.

Ví dụ: You’re welcome to join us for dinner provided that you let us know in advance. (Bạn được chào đón để tham gia cùng chúng tôi ăn tối miễn là bạn báo cho chúng tôi trước.)

3.3. Unless

Cấu trúc Except if mang nghĩa “nếu không”, nhưng thường ám chỉ đến một điều kiện tiêu cực, nghĩa là nếu điều kiện không xảy ra, thì một hành động hoặc sự kiện khác sẽ diễn ra.

Ví dụ minh họa:

• She won’t go to the party unless her friend invites her. (Cô ấy sẽ không đi đến bữa tiệc trừ khi bạn cô mời cô ấy.)
• She won’t accept the job offer unless the salary meets her expectations. (Cô ấy sẽ không chấp nhận lời đề nghị công việc trừ khi mức lương đáp ứng được mong đợi)

3.4. Under the condition that

Under the condition that có ý nghĩa “với điều kiện là” cũng diễn tả một điều kiện hoặc điều kiện để có điều gì đó xảy ra, thường được sử dụng trong các bối cảnh trang trọng hoặc trong văn viết.

Ví dụ: The company will offer you a promotion on condition that you complete the required training program. (Công ty sẽ đề xuất cho bạn một lời mời thăng chức với điều kiện bạn hoàn thành chương trình đào theo yêu cầu.)

Bài tập áp dụng

Viết lại câu với cấu trúc In case, chỉnh sao cho nghĩa không thay đổi.

1. Ken has to speak English very slowly or everyone won’t be able to understand him.
2. You can borrow my car, but you need to fill up the tank before. 
3. You can use the swimming pool, but make sure you don’t run near it.
4. You can buy the dress only if you stay within your budget.
5. You can go out with your friends, but don’t stay out too late.
6. You can have a pet, but you must take care of it properly.
7. You can take a day off, but you have to finish your work.
8. You can order dessert only if you eat all your dinner.
9. Mary’ll speak to you only if you apologize to her.
10. We must try to practise harder or we won’t win the championship. 

Đáp án thay thế:

1. Everyone will be able to understand Ken so long as he speaks very slowly.
2. You can borrow my car so long as you fill up the tank before returning it.
3. You can use the swimming pool so long as you don’t run near it.
4. You can buy the dress so long as you stay within your budget.
5. You can go out with your friends so long as you don’t stay out too late.
6. You can have a pet so long as you take care of it properly.
7. You can take a day off so long as you finish your work.
8. You can order dessert so long as you eat all your dinner.
9. Mary will speak to you as long as you apologize to her.
10. We will win the champion as long as we try to practise harder.