New words：

primary ['praiməri] adj.主要的；最重要的；基本的；最初的；初级的

Sample Sentences：

The little boy left primary school at eleven.
Food and water are primary wants of human life.
A primary cause of Tom's failure is his laziness.
He only accepted the primary education off and on in his childhood.

failure ['feiljə] n.失败；故障；失灵；倒闭

New words：

volunteer [.vɔlən'tiə]
n.志愿者；志愿兵；义务工作者；自告奋勇者
v.自愿做；义务做

Sample Sentences：

The soldier volunteered for guard duty.
They volunteered to repair the house for the old lady.

Can I have a volunteer to wash the dishes?
Volunteers were ready and waiting to pack the food in boxes.

New words：

joy [dʒɔi] n.快乐；欢乐；乐事；喜悦

Sample Sentences：

I saw the joy in her smiling face.
Learning English is my great joy.
On a hot day, a cool swim is a joy.
I felt as if my heart would burst with joy.

New words：

pride [praid] n.骄傲；自豪；自尊；傲慢

take pride in sth 为…感到骄傲；引以为豪

Sample Sentences：

I take pride in my work.
Their son is their pride and joy.
She takes great pride in her children's success.
I think you hurt his pride by laughing at the way he speaks English.

joy [dʒɔi] n.快乐；乐事；喜悦

New words：

grammar ['græmə] n.语法；文法

Sample Sentences：

I have made a mistake in grammar.
I know nothing about Latin grammar.
I find German grammar very difficult.
The book explains grammar simply and clearly.