New Words：

mention [ˈmenʃn] vt. 提到;写到;说到

Sample Sentences：

Don't mention it.
Did she mention where she was going?
Nobody mentioned anything to me about it.
I didn't mention it because I was afraid of upsetting him.

New Words：

last [lɑːst] v.持续；延续

Sample Sentences：

The earthquake lasted for three days.
The hot weather lasted until September.
How long do you think this storm will last?
The wind is changing round, so the storm won't last long.

New Words：

effect [ɪˈfekt] n. 影响；作用；效果；效应
take effect 见效; 生效

Sample Sentences：

The new law takes effect from tomorrow.
The effects will last for the whole of his life.
I can feel the effects of too many late nights.
The effect of not eating breakfast is to feel really hungry.

last [lɑːst] v.持续；延续

New Words：

quantity [ˈkwɒntəti] n. 量；数量
a quantity of 大量的;一些;许多
quantities of 大量的;一些;许多

Sample Sentences：

A quantity of food was on the table.
There is a small quantity of water left in the bottle.
They needed large quantities of wood for building houses.
They spent quantities of money on building a huge bridge.

New Words：

drug [drʌɡ] n.药物；毒品

Sample Sentences：

The drug has some bad side effects.
Few teenagers in our city use drugs.
This drug is used to lower blood pressure.
The police found a quantity of drugs at his home.

effect [ɪˈfekt] n. 影响；作用；效果；效应
quantity [ˈkwɒntəti] n. 量；数量
a quantity of 大量的;一些;许多
quantities of 大量的;一些;许多