相信每個小朋友的老師或者家人在你上小學的第一天起就會告訴你：“每天要按時到校，放學及時回家?！蹦沁@個“按時”和“及時”都該怎么用英語表達呢?Let’s take a look.

1. 按時 —— on time

So easy! Right? For example：

(1). You should get to school >你應該按時到校。

(2). Please hand in your homework >請按時交作業。

(3) Mom, can you pick me up >媽媽，你能按時來接我嗎?

2. 及時 —— in time

(1). If you need help, please call me in time. 如果你需要幫助，請及時給我打電話。

(2). Luckily, he called the police in time, the little child was finally saved.幸好他及時報警，那個小孩子最終得救了。

3. 提前 —— ahead of time

(1). I can finish the work ahead of time. 我能提前完成工作。

(2). Please let me know the details ahead of time. 請提前讓我知道細節。

OK. That’s it for today. If you have any questions about clock, feel free to ask me. See you!