New Words：

imagine [ɪˈmædʒɪn] v. 想；设想；想像

Sample Sentences：

The work is not so easy as you imagine.
I can't imagine life without the children now.
Close your eyes and imagine you are in a forest.

New Words：

toward [tə'wɔ:d] prep. 对；向；朝；朝向
towards [təˈwɔːdz] prep. 对；向；朝；朝向

toward：是美式英语，在美国和加拿大等北美地区，经常被使用。
towards：是英式英语，在英国和澳大利亚，经常被使用。

Sample Sentences：

Jim moved towards the door.
She warmly extended both hands towards us.
He was walking towards town when I met him.
The money will go towards a new school building.

New Words：

weak [wiːk] adj.虚弱的；无力的； 懦弱的; 软弱无力的

alike [əˈlaɪk]
adv.同样地;十分相像地;很相似地;两者都
adj.相像;十分相似

Sample Sentences：

She is still weak after her illness.
I was too weak to move or think or speak.
That bridge is too weak for heavy traffic.

My sister and I do not look alike.
They tried to treat all their children alike.
They all look so alike to me that I'm never sure which is which.

New Words：

penguin [ˈpeŋɡwɪn] n. 企鹅
group [ɡruːp] n.组;群;批;类

Sample Sentences：

Penguins are not afraid of people.
It is well known that penguins live in the Antarctic.

Which group do you think did the best job?
A group of us are going to the theatre this evening.

New Words：

bottom [ˈbɒtəm] n. 底部;最下部

Sample Sentences：

The ship sank to the bottom of the sea.
We cleaned the house from top to bottom.
I found some coins at the bottom of my bag.
The water was so clear we could see the bottom of the lake.