major:
形容词 a.
1.较大的;较多的
The house needs major repairs.
这幢房子需要大修。
2.主要的,重要的;一流的[B]
He is a major writer.
他是位大作家。
3.主修的[B]
Her major subject is chemistry.
她的主修科是化学。
4.成年的,达到法定年龄的
5.【音】大调的,大音阶的
6.【逻】大前提的

名词 n. [C]
1.成年人,已到法定年龄者
2.(常大写)陆军(或空军,海军陆战队)少校
3.(大学中的)主修科目
4.(大学专业的)主修学生
Physics was his major.
物理是他的主修科目。
5.【音】大调,大音阶
He is a mathematics major.
他是主修数学的学生。
6.【逻】大前提
7.主要公司(组织、企业...等)
MGM, Paramount, and Columbia are all majors in film industry.
米高梅、派拉蒙和哥伦比亚都是电影业的大公司。

不及物动词 vi.
1.主修[(+in)]
Alice majors in economics.
艾丽丝主修经济学。

major in 主修
Now he is majoring in Chinese.
现在他主修汉语。
He majored in history.
他主修历史。
Are you majoring in English Literature?
你主修的是英国文学吗?

Try doing sth. 尝试做某事
Try to do sth 努力做某事

You must try to be more careful.
你可要多加小心。
I tried gardening but didn't succeed.
我试着种果木花卉，但未成功。

passion:
名词 n.
1.热情,激情[U][C][(+for)]
They sang with great passion.
他们满怀激情地歌唱。
2.恋情;情欲[U][(+for)]
You may have a passion for her, but it isn't love.
你也许对她怀有强烈的感情,但这不是爱情。
3.盛怒,忿怒[S]
At those words of mine he broke into a violent passion.
他听了我说的那些话便勃然大怒。
4.酷爱[S][(+for)]
She had a passion for music.
她十分爱好音乐。
5.(大写)耶稣受难记[the S]

passion for:对什么很有热情
She had a passion for music.
她十分爱好音乐。