New Words:

calm [kɑːm] 镇静的;沉着的;风平浪静的;无风的
promise [ˈprɒmɪs] 许诺;承诺;答应;保证
swam [swæm] swim的过去式
swum [swʌm] swim的过去分词

Sample Sentences：

We swam in the calm sea.
Please calm down! We'll find her.
I kept telling myself to keep calm.

Promise me you'll take care of yourself.
Promise me you will not waste your time.
I can promise you, you'll have a wonderful time.

take care of 照顾

New Words:

voice [vɔɪs] 嗓音;说话声;歌唱声

Sample Sentences：

She has a high voice.
Keep your voice down.
I could hear voices in the next room.
'I promise,' she said in a small voice.

promise [ˈprɒmɪs] 许诺;承诺;答应;保证

New Words:

sound [saʊnd]

n. 声音;响声
v. (使)发出声音，响;拉响警报

Sample Sentences：

Could you turn the sound up/down ?
Sound travels more slowly than light.
Sound travels better in water than in air.

travel [ˈtrævl] 长途行走;旅行;转送，传播;

New Words:

alarm [əˈlɑːrm] 警报；警报器；闹铃
alarm clock 闹钟

Sample Sentences：

She decided to sound the alarm.
When I saw the smoke, I tried to sound the fire alarm.

I set the alarm clock for 7 o'clock.
He set his alarm clock and then went to bed.

New Words：

set [set] 放；置；设置；安排
set 过去式和过去分词不变
set up 设置；安装；建立；安排
set off 出发；动身
set a trap 设陷阱;设圈套

Sample Sentences：

I set a trap for mice.
The farmer set a trap for rats.
Set the alarm for 7 o'clock.
Could you set the table for dinner?
I come to tell you to set up a meeting this afternoon.
I set up the computer so that they could work from home.

alarm [əˈlɑːrm] 警报；警报器