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人教版高一英语必修一Unit1 Section II& Section III 知识清单
try out for 意为＂参加······选拔（或试演）”
【拓展】try 构成的其他短语：
e.g. While attending junior high, Linda tried out for the school dancing team，but she was refused at first because she was too short.
Your idea seems fine but we need to try it out in practice.
expert
【解析】
（1）n. {C} 专家，行家
★an expert in/at/on (doing) sth. （做）某事的专家
（2）adj．熟练的，内行的，经验（或知识）丰富的
常见搭配: ★be／become expert at／in／on（doing）sth. 擅长／变得擅长（做）某事
e.g. Dr Black is an excellent expert on／in／at child development.
My brother is expert in American slang, which results from his love of American movies.
behaviour
【解析】behaviour n.［U］行为，举止 也可写作behavior（美式英语）
常见搭配 ★good／bad behaviour 良好／恶劣行为
【拓展】
e.g. Knowing these causes can make us examine our behaviour, and correct bad habits.
It is necessary to reward children for their good behaviour.
attract
【解析】attract vt.吸引；引起······的注意（或兴趣）
【拓展】
e.g. At the end of each term, students from the Calligraphy Club put on a calligraphy show, attracting more people to Chinese calligraphy.
Tourists are attracted by the endless sandy beaches and perfect weather.
focus
【解析】（1）vi．＆vt．集中（精力、注意力等）
★focus (one's attention/energy/mind) on/upon...常见集中（某人的注意力／精力／心思）于······；关注·····
★focus one＇s eyes on...注视······ 集中精力
（2）n．［C］焦点；关注
e.g. If you focus on what you've left behind, you will never be able to see what lies ahead.
It's hard for children to focus their minds on one thing for a long time.
The teacher reminded Tom to focus his attention on what she was saying. So all the other students looked at him. He became the focus of the class.
addict
【解析】addicted adj.上瘾的；入迷的
常见搭配： ★be／become addicted to...对······上瘾；沉溺于······
e.g. Some measures have been taken to prevent students becoming addicted to computer games.
As you know, Paul used to be an addict because he was addicted to drinking for many years. To our relief， he got rid of his alcohol addiction last year.
句型“make+it+adj.(+for sb./sth.) +to do sth. ”
【解析】该结构中it是形式宾语，真正的宾语是后面的动词不定式短语，it后面的形容词作宾语补足语，for用于引出动词不定式的逻辑主语。
e.g. With various activities, our English teacher makes it interesting to learn English.
They should make it clear for us to know how to operate the machine.

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