New Words：

electric [ɪˈlektrɪk] adj. 电的；用电的；电动的；发电的
electricity [ɪˌlekˈtrɪsəti] n. 电；电能
electrician [ɪˌlekˈtrɪʃn] n. 电工;电器技师

Sample Sentences：

They face death by the electric chair.
Now, more and more people choose to use electric bikes.
We need an electrician to fix our light switch.
Don't leave the lights on it wastes electricity.
There is still no electricity three days after the storm.
It's very wasteful of electricity to have so many lights on at once.

switch [swɪtʃ] n. (电路的)开关，闸

New Words：

deal [diːl]
n.协议；交易
v.处理；对付

deal with 处理，应付;对待

Sample Sentences：

You should deal with him more politely.
The meeting will deal with these problems.
It's no big deal! I can find another job anytime.
I didn’t pass the exam this time, but it’s not a big deal. I’ll make it next time.
I'll make/do a deal with you - you wash the car and I'll let you use it tonight.

New Words：

had better 最好；应该；还是
right away 马上，立刻
at once 马上，立刻；一起，同时

Sample Sentences：

You'd better go to bed to rest at once.
I'll go and pick her up right away/at once.
We'd better leave now or we'll miss the bus.
You make me sick! You'd better get out of my face at once!
You don't look well. You'd better go and see a doctor right away.

New Words：

lack [læk]
v.缺乏；没有；不足；短缺
n.缺乏；短缺；匮乏

Sample Sentences：

Lack of food is one of their worries.
Strong coffee can deal with any lack of sleep.
He can not buy it because of his lack of money.
I think you are lack of exercise, you'd better spend some time on it.

New Words：

goods[ɡʊdz] n. 商品；货品；货物
oxygen [ˈɒksɪdʒən] n. 氧；氧气

Sample Sentences：

These goods are priced too high.
We get these goods from foreign countries.

She died from lack of oxygen.
No living things can live without oxygen.

lack [læk]
v.缺乏；没有；不足；短缺
n.缺乏；短缺；匮乏