New Words：

sour [ˈsaʊər] adj. 酸的;有酸味的

Sample Sentences：

This pear tastes a bit sour.
The fruit is still green and eats sour.
I like fruit. But I don't like grapes. They're sour.

New Words：

ripe [raɪp] adj.成熟的；时机成熟的

Sample Sentences：

Was the peach ripe or green?
Don't pick those apples until they are ripe.
They decided to wait until the time was ripe.

New Words：

rude [ruːd] adj. 粗鲁的；无礼的

Sample Sentences：

Why are you so rude to your mother?
It's rude to speak when you're eating.
I don't wish to be rude, but could you be a little quieter?

New Words：

tongue [tʌŋ] n. 舌头
stick out 伸出

Sample Sentences：

The dog's tongue was hanging out.
She made a face and stuck out her tongue at him.
It's very rude to stick your tongue out at people.
His name was on the top of my tongue, but I just couldn't remember?

rude [ruːd] adj. 粗鲁的；无礼的

New Words：

thorn [θɔːrn] n. 刺;荆棘
stem [stem] n.（花草的）茎；柄

Sample Sentences：

The thorns hurt his hand.
He removes a thorn from a lion's paw.
In this world there's no rose without thorns.

This flower has a long stem.
Cut off the stems of these flowers.

paw [pɔː] n. 爪子;(动物的)爪;(人的)手