1.four，四；四个一组

The flight will take four hours.

此次飞行将需要四个小时。

2.fourth，第四

He was the fourth child.

他是家里的第四个孩子。

3.fourteen，十四

Kelly is fourteen and Megan is thirteen.

凯丽14岁，梅格恩13岁。

4.forty，四十

Can I have forty dollars for lunch? Forty dollars?

能给我40块钱吃午饭吗？40块?

5.source，来源，出处；消息来源；根源

联想：从课上所获取到东西。

Lisa now has a steady,reliable source of income.

现在，丽萨拥有一个稳定可靠的收入来源。

6.resource，资源，物力；资料；机敏

Chinese people say one has to make A Bite of Chim use of the local resources available.

中国人说，靠山吃山，靠海吃海。

7.course，课程；跑道；航线；菜；进程

联想：知识都来源（source）于课程。

I took a biology course in high school.

我在高中上过生物课。

8.court，法庭；出庭人员；球场；讨好

联想：轮到我们（our）出庭（t）了。

So we'll see Conrad 's lawyers in court.

我们要和康拉德的律师法庭上见。

9.north，北，北方，北部

Which way is north?

哪边是北啊？

10.northern，北方的，向北的

She boarded a train on the Northern Line, heading north.

她上了北线列车往北去了。