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.

New Words：

perhaps [pərˈhæps] adv. 也许；可能；大概

Sample Sentences：

‘You could do it yourself.’ ‘Yeah, perhaps.’
Perhaps you can tell me a little more about this.
Perhaps you don't know what you really want at all.

New Words：

enemy [ˈenəmi] n. 敌人；敌军；敌国；仇人

Sample Sentences：

The enemy are on the march.
Don't make an enemy of him.
The city is under enemy control.
They sent the enemy ship to the bottom of the sea.

bottom [ˈbɒtəm] n. 底部;最下部

New Words：

curious [ˈkjʊriəs] adj.好奇的；奇异的；古怪的
curiously [ˈkjʊriəsli] adv.好奇地；奇妙地

Sample Sentences：

I'm curious to know what you think about this.
They were very curious about the people who lived upstairs.

"Who's that boy? " she asked curiously.
A monkey behind the tree looked at us curiously.