New Words：
planet ['plænit] n. 行星；地球（尤指环境）
what planet is sb. on? 指某人的想法完全不切实际
Sample Sentences：
The planets move around the sun.
Does life exist on other planets?
They claimed to have discovered a new planet.
Mars is the fourth planet in order from the sun.
He thinks being a father is easy. What planet is he on?
exist [ig'zist] v. 存在；生存
claim [kleɪm] v.声称；宣称
New Words：
chore [tʃɔ:r] n.家务活；杂事
Sample Sentences：
It' s such a chore to do the shopping every day !
As a child one of my chores was to feed the animals.
Each morning I get up and do the chore before I go out.
New Words：
familiar [fəˈmɪljər] adj. 熟悉；熟悉的；常见到的
bakery ['beikəri] n. 面包店
Sample Sentences：
Your face seems familiar.
You look familiar to me. Have I met you before?
He looks so familiar but I can't remember his name.
The smell is very familiar to everyone who lives near a bakery.
New Words：
catch on 流行起来；变得流行；理解；懂得
Sample Sentences：
It is a nice song and I think it will catch on quickly.
I don't think I catch on. Could you try to explain the problem again?
I didn't catch on to this joke.
I don't quite catch on to what she is saying.
New Words：
anew [ə'nju:] adv. 重新；再
Sample Sentences：
They started life anew in Canada.
As the new year begins, let us also start anew.
He made so many mistakes that he had to begin his work anew.