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’.

New words：

solo ['səuləu]
n.独唱；独奏；独舞；单人表演
adj.独自的；单独的；独唱的；独奏的

Sample Sentences：

The concert began with a piano solo.
He has been asked to sing a solo at the concert.
This was definitely a successful solo trip for me.

New words：

risk [risk]
n.风险；危险；危险人物；会带来风险的事物
v.使…冒风险（或面临危险）；冒…的风险（或危险）；冒险做

Sample Sentences：

He risked his life to save her.
He saved my life at the risk of losing his own.
It was a difficult decision but we decided to risk it .
The disease is spreading, and all children under 5 are at risk.