英文原文：

Hi guys, this is Kee from BBC Learning English. Today I'm going to tell you how to use 'for' and 'since'.

We use 'for' to describe how long an activity or a situation lasts. For example, I can say 'I go running every day for 10 minutes' – that's not true though.

On the other hand, 'since' is used to describe when an activity or a situation began. For example, I can say 'I have been recording this video since 10 o'clock'.

So, remember 'for' is used to describe how long an activity or a situation lasts, whereas 'since' is used to describe when an activity or a situation began.

It's easy, isn't it?

中文翻譯：

大家好，我是BBC Learning English的Kee。今天我將告訴你們?nèi)绾问褂谩癴or”和“since”。

我們使用“for”來描述一個活動或情況持續(xù)的時間。例如，我可以說“我每天跑步10分鐘”- 雖然這不是真的。

另一方面，“since”用于描述一個活動或情況開始的時間。例如，我可以說“我從10點開始錄制這個視頻”。

因此，請記住，“for”用于描述一個活動或情況持續(xù)的時間，而“since”用于描述一個活動或情況開始的時間。

很簡單，不是嗎？

測驗：

1. I have been travelling around the world since ___________.

A?last December

B?a month

C?about a week

2. Everyone's been working non-stop for ____________ to complete this project.

A?last summer

B?this morning

C?a week

3. My friend and I play tennis every Sunday __________ an hour.

A?for

B?since

4. I've been waiting for his phone call ___________ noon.

A?for

B?since

答案：

1A?

2C

3A

4B