New Words:

step [step] 步；步骤；台阶；步伐
explain [ɪkˈspleɪn] 解释;说明

Sample Sentences:

We heard steps outside.
I'll explain it to you step by step.
Do you understand what I'm trying to explain?
I can't understand the word. Could you explain it to me again?

New Words:

set off [set ɔːf] 动身;出发

Sample Sentences:

He set off by taxi.
We are ready to set off.
It was raining hard when we set off.

New Words：

moment [ˈmoʊmənt] 瞬间；时机；片刻；时光

Sample Sentences：

Could you help me a moment?
Could you wait a moment, please?
This is the happiest moment of my life!
One moment, please ( = Please wait a short time ) .

New Words:

lip [lɪp] 嘴唇
upper lip 上嘴唇
lower lip 下嘴唇

lipstick [ˈlɪpstɪk] 口红;唇膏

Sample Sentences:

She bit her lower lip.
She kissed him on the lips .
I must learn to bite my lip.

She was wearing red lipstick.
I need to put some lipstick on.
What lipstick do you use? I love it.

New Words：

excuse [ɪkˈskjuːs , ɪkˈskjuːz] 借口；理由；辩解
Excuse me. 请原谅;对不起;劳驾;打扰一下

Sample Sentences：

She always has an excuse for being late.
Late again! What's your excuse this time?

Excuse me. How much is the beef?
Excuse me, grandfather. Can I speak with you for a moment?
When you have to leave your seat, you need to say "Excuse me for a moment, please. "