New words：

rowboat ['rəubəut] n. 划艇；小船
rowing boat [ˈrəʊɪŋ bəʊt] n. 划艇

Sample Sentences：

He uses a rowboat to go fishing on the lake.
He climbed into the rowing boat and took the oars.
They rented a rowboat and spent the afternoon on the lake.

oar [ɔ:r]n. 桨；船桨

New words：

row [rəu,rau]
n.一行;一排;一列
v.划船;划船送

Sample Sentences：

He rowed the boat across the lake.
The fisherman rowed us back to the shore.

Students stand hand in hand in a row.
A row of children are standing in front of a row of chairs.

New words：

scan [skæn]
v.扫描；审视；浏览；细看
n.浏览；扫描检查；快速查阅

Sample Sentences：

The doctors gave him an brain scan.
The radar scanned the sky for enemy planes.
I scanned the newspaper when I was waiting for the bus.
His mother scanned his face to see if he was telling the truth.

New words：

hint [hint]
n.提示；暗示；迹象；窍门
v.暗示；透露；示意

Sample Sentences：

What are you hinting at?
I thought she was hinting at something, but I let it go.
They hinted to us that they would take our suggestion.

At the first hint of trouble, they left.
He gave me a hint that I was being cheated.
Should I drop a hint (= give a hint ) to Matt?

New words：

realize ['riəlaiz] v. 实现；意识到；认识到；领悟；理解

Sample Sentences：

Does he realize his mistake yet?
At last she realized her dream of becoming an actress.
The man laughed when he realized what had happened.
He realized his dream when he passed the entrance examination.
If you were in the Sahara, you would realize the value of fresh water.