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B1

as soon as / by the time / until / once + S + V (hiện tại), S + will + V0

Mệnh đề thời gian nâng cao

Explanation

Sau as soon as, by the time, once, until, the moment thì luôn dùng thì hiện tại dù nói về tương lai. by the time thường đi với tương lai hoàn thành ở vế chính. Bẫy thường gặp: Không dùng will trong mệnh đề thời gian: until I will come back ✗, until I come back ✓.

Examples

As soon as I hear, I will call you.

Nghe được tin là tôi gọi bạn ngay.

By the time you arrive, we will have eaten.

Lúc bạn tới thì chúng tôi đã ăn xong.

Wait here until I come back.

Đợi ở đây tới khi tôi quay lại.

Once you learn it, you never forget.

Học được rồi thì không quên nữa.

Practice

Test your understanding with a quick quiz

Learn “as soon as / by the time / until / once + S + V (hiện tại), S + will + V0” effectively

The grammar point “as soon as / by the time / until / once + S + V (hiện tại), S + will + V0” (Mệnh đề thời gian nâng cao) is one of the key structures at CEFR 3. To use it fluently, you need to understand the contexts where it's used and practice regularly.

Study tip: read the examples aloud many times to build a natural reflex. Then try making your own sentences for your own situations. Use the audio button to hear and practice accurate pronunciation.

You can also view the full “” lesson to understand the related grammar and vocabulary more deeply.

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