New Words：
pure [pjʊr] adj. 纯的；纯净的；纯粹的；不掺杂质的
Celsius [ˈselsiəs] adj.摄氏的
Sample Sentences：
The ring is made of pure gold.
Water boils at 100 degrees Celsius.
Water freezes at 0 degrees Celsius.
The fields were all covered with pure white snow.
Pure water sometimes does not freeze until it reaches minus 40 degrees Celsius.
New Words：
sheet [ʃiːt] n. 床单;被单
blanket [ˈblæŋkɪt] n. 毯子;毛毯
Sample Sentences：
The sheets are 100% pure cotton.
The bed had clean sheets and warm blankets.
She put a blanket over the sleeping child.
To keep warm you need blankets above and below you.
pure [pjʊr] adj. 纯的；纯净的；纯粹的
New Words：
switch [swɪtʃ]
n.转换, 开关
v.改变, 交换, 转换
Sample Sentences：
Do you mind if I switch the radio off?
They switched the train to the other track.
The dates of the last two exams have been switched.
Do you think she'll notice if I switch my glass with hers?
I wish to turn on the light, where is the switch?
Can you reach the light switch from where you're sitting?
New Words：
otherwise [ˈʌðərwaɪz] adv. 否则; 除此以外; 其他方面
Sample Sentences：
He is noisy, but otherwise a nice boy.
Do as you're told, otherwise you'll be in trouble.
Shut the window, otherwise it'll get too cold in here.
You'd better give me my book, otherwise I'll fail my test.
New Words：
toast [toʊst] n. 吐司;烤面包片
toaster [ˈtoʊstər] n. 烤面包机
torch [tɔːrtʃ] n. 手电筒;火炬;火把
Sample Sentences：
Do you mind if I use your toaster?
My torch threw out enough light to see the path.
The coffee was untouched, the toast had cooled.
I want you to stand beside me and hold the electric torch.