New Words：

dizzy ['dizi] adj. 头晕的；眩晕的；头晕目眩的
dizziness ['dizinis] n. 头昏眼花；眩晕
tiredness ['taiədnis] n. 疲倦

Sample Sentences：

When he got up he felt dizzy.
We were dizzy by the strong wind.
Climbing so high made me feel dizzy.

After a hard day's work, the poor girl was half dead with tiredness.
The dizziness happened every two or three days, and lasted most of the day every time.

New Words：

spin [spin] v. 旋转

Sample Sentences：

My head was spinning from the wine.
The plane was spinning out of control.
My sister can spin on her toes like a dancer.

New Words：

pearl [pɜːrl] n. 珍珠
fist [fist] n.拳头

Sample Sentences：

The necklace is made of natural pearls.
Can you show me your latest pearl necklaces?
He was banging on the door with his fist.

New Words：

string [striŋ]
n.线；一连串
v.悬挂；系；扎；把…连在一起

strung [strʌŋ] 动词string的过去式与过去分词

Sample Sentences：

The key is hanging on a string by the door.
She wore a string of pearls around her neck.
A string of accidents happened at that corner.

These girls are stringing pearls.
Flags had been strung up across the street.

pearl [pɜːl] n. 珍珠

New Words：

mower ['məuə] n. 割草机

Sample Sentences：

The mower is covered with rust.
Do not lift the mower if the engine is running.
I borrowed a mower from my neighbor to cut grass in my garden.