He is an engineer and the engineer teaches at Qinghua University.
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Prep. 介词
The man stood there in silence. The man is in silence. The man in silence is a new-comer of our
seriously ill. They are getting on very well with each other. I must be off now because I have much work
to see to.
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Adv. 副词:修饰动词、形容词、副词
We should constantly review our lessons. The doctor is treating the patient who is
Tom: I don't know, father. Father: Oh, yes, you do! Think! When other
boys and girls are doing and writing, who sits in the class and only watches how other people work? Tom: Our teacher,第f2a1页th/共e23r页.
Numeral num.数量或顺序
Verb
v 人或事物的动作或状态
Adverb adv修饰v、adj或其他adv
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语法:十大词类
Form words:(虚词) Article art.名词前,帮助说明n Preposition prep.名词、代词等前面 Conjunction conj.连接词、短语或句子 Interjection interj. 说话时的感情或口气(不常用)