am

adj. 是的
v. 是

I am filled with desire to go back home.
我心中充满了回家的渴望。
I am a doctor.
我是个医生。
I think I am quite a patient person.
我认为我是一个相当有耐心的人。
Splash-down is scheduled for 5.30 am.
航天器的预定溅落时间为上午5时30分.
No, you can't. I am sure.
是的，您绝对做不到。
I am a Clark Gable nut: I have seen all his films.
我是克拉克·盖博的影迷，我看过他演的所有影片。
`Are you tired?' `Yes, I am a bit (tired).'
｀你累了吗?＇｀是的, 我有点儿（累）.＇
I am more than twice as old as he.
我的年龄是他的两倍还不止。

无

名词 am:

a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
同义词：americium, atomic number 95
a master's degree in arts and sciences
同义词：Master of Arts, MA, Artium Magister
modulation of the amplitude of the (radio) carrier wave
同义词：amplitude modulation
动词 be:

have the quality of being; (copula, used with an adjective or a predicate noun)
同义词：be
be identical to; be someone or something
同义词：be
occupy a certain position or area; be somewhere
同义词：be
have an existence, be extant
同义词：exist, be
happen, occur, take place
同义词：be
be identical or equivalent to
同义词：equal, be
form or compose
同义词：constitute, represent, make up, comprise, be
work in a specific place, with a specific subject, or in a specific function
同义词：be, follow
represent, as of a character on stage
同义词：embody, be, personify
spend or use time
同义词：be
have life, be alive
同义词：be, live
to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form
同义词：be
be priced at
同义词：cost, be