文档介绍：Unit 1
Words and Their Stories
The North American beaver is widely known for its habit of building dams and for its closely knit family units. The construction of the dam produces a small- to moderate-sized beaver pond that helps to increase the biological diversity of the surrounding area as well as conserve water and maintain water flow.
There are only two kinds of beavers, the American beaver and the Eurasian beaver. The two species share similar behavior and anatomy, although they have some small physical differences, such as the shape of the nasal bones.
an eager beaver 热心工作的人
be eager / anxious to do sth. 渴望做
They are eager / anxious to know whether they have been chosen or not.
be eager / anxious for
Simon was an ambitious man, eager for power and ess.
n. eagerness / anxiety
expect sth. of sb. 对某人……的期望
The boy’s parents expected too much of him.
Teachers always expect a lot of their students.
类似: require…of sb. 对某人……的要求
I am willing to do whatever my country requires of me.
expect sth / that
expect to do
expect sb. to do / be expected to do
had expected to do = expected to have done
I had expected to pay them a visit, but I was too busy then.
I expected to have paid them a visit, …
as expected 正如所预料的
As expected, the three men were sentenced to life imprisonment. (非谓语)
= As had been / was expected (非限定性定语从句)
suppose / supposing (that) 假设 conj.
Suppose his statement is right.
Supposing (that) this is not the right way to the station, what shall we do?
provided / providing (that) 常表示好的条件
He is e e along, provided that he behaves himself.
complain vi. / vt. 抱怨,投诉
vi. He’s plaining.
vt. complain that…
complain (to sb.) about / of sth.
plained that he had been rude to her.
plained (to the manager) about the bad service.
Dan's plaining of severe headaches.
= to say that you feel ill or have a pain in a part of your body

n. complaint
make plaint to sb. about sth.
protest v.
protest against / at / about
Thousands of people blocked the st