New Words：

sandpit [ˈsændpɪt] n.（供儿童玩的）沙坑
sandpile ['sændpail] n.（供儿童玩的）沙堆

Sample Sentences：

The children are playing in the sandpit at the river side.
There was a sandpit, a seesaw and a swing in the playground.

New Words：

daisy [ˈdeɪzi] n. 雏菊花
bug [bʌg] n. (机器，尤指计算机的）故障，程序错误，缺陷 ;虫子;小昆虫

Sample Sentences：

He pulled a bunch of daisies from behind his back.
Daisies are small white flowers which open during the day and close at night.

There is a bug in the system.
Most girls are really afraid of bugs.
That's why we test software: to find bugs.
We noticed tiny bugs that were all over the walls.

New Words：

simple [ˈsɪmpl] adj. 易于理解的；易做的；简单的

Sample Sentences：

This machine is very simple to use.
We had a simple meal of soup and bread.
I need a simple yes or no to my questions.
The answer may not be as simple as you think.

New Words：

unless [ənˈles] conj. 除非；若非；除非在…情况下；如果不

Sample Sentences：

You will fail unless you work hard.
I won't tell them ─ not unless you say I can.
I'm not happy unless I ride or drive every day.

New Words：

tax [tæks]
n.税；税款
v.对…征税；使纳税

Sample Sentences：

Can you tell me how much income tax must I pay?
I'm new in China and need to know more about your income Tax. Would you please explain it to me?

Tax the rich Feed the poor.
How much did they tax you for that bicycle?