New words：

gill [gil] n. 鳃

Sample Sentences：

A fish breathes through its gills.
Fish take in oxygen through their gills.
Some animals, such as the Mexican salamander, have their gills on the outside.

New words：

tadpole ['tædpəul] n.蝌蚪

Sample Sentences：

Both fish and tadpoles have gills.
Now it is no more a tadpole; it has become a young frog.
Each tadpole has a mouth with tiny teeth to gnaw the plants.

gill [gil] n. 鳃
gnaw [nɔ:] v. 啃；咬；啮；侵蚀

New words：

transform [træns'fɔ:m] vt.改变；转换

Sample Sentences：

A tadpole transforms into a frog.
A steam engine transforms heat into power.
The magician transformed the frog into a princess.
He have transformed his garage into a guest house.

tadpole ['tædpəul] n.蝌蚪

New words：

character ['kæriktə] n.特征；特性；性格；角色；字符

Sample Sentences：

Have you learned to write the character?
There are three main characters in that movie.
Success and wealth transformed his character.
Chinese characters are troublesome to write.
The character of the neighbourhood hasn't changed at all.
How do you get along with people who have different characters?

transform [træns'fɔ:m] vt.改变；转换
troublesome ['trʌblsəm] adj.令人烦恼的；讨厌的；令人痛苦的；困难的；棘手的
get along with 相处；与…和睦相处；进展

New words：

title ['taitl]
n.标题；头衔；职称；所有权凭证
v.（给书、乐曲等）加标题

Sample Sentences：

She hasn't yet titled her novel.
The title is right at the top of the page.
They're fighting for the world title tonight.
His poems were published under the title of ‘Love’.