when

khi, ngay khi, nếu

1. At (or as soon as) that time that; at the (or any and every) time that; if.Vào lúc, ngay khi hoặc mỗi khi điều gì xảy ra; nếu.
2. During the time that; at the time of the action of the following clause or participle phrase.Trong lúc hoặc vào thời điểm diễn ra hành động được nêu trong mệnh đề hay cụm phân từ theo sau.
3. At what time; at which time.
4. Since; given the fact that; considering that.
5. Whereas; although; at the same time as; in spite of the fact that.

• Don't forget to signal when (you are) turning right.
• When she'd written her letters, she did some gardening.
• Jose, when he finally managed to go to sleep, had a series of bad dreams.