Come and meet our employees, Mr. Richards.
Thank you, Mr. Jackson.
This is Nicola Grey, and this is Claire Taylor.
How do you do?
Those women are very hard-working.
What are their jobs?
They’re keyboard operators.
This is Michael Baker, and this is Jeremy Short.
How do you do?
They aren’t very busy!
What are their jobs?
They’re sales reps.
They are very lazy.
Who is this young man?
This is Jim.
He is our office assistant
名词的复数形式
如果名词单数词尾为-f或-fe（读作／f／），则其复数一律变为-ves （读作／vz／），即将-f或-fe变成-v，再加-es而成，如 housewife----housewives。
英语中有一些名词的复数形式是不规则的，如man与woman其复数形式分别为men与women。此外还可用man，woman等来区别阳性与阴性：以-man结尾的一些复合名词指男性，如milkman---- milkmen，policeman ---- policemen；一些以-woman结尾的名词指女性，如postwoman---- postwomen，policewoman ---- policewomen。-
who 引导的特殊疑问句
Who is…？或 Who are…？这类以疑问词 who引导的疑问句通常用来询问人的姓名和身份。Who…？仅指人，可以用来询问男性、女性、单数或复数的人。如：
注意这种句型与 What is…？或 What are…？这类句型的区别：What…？句型主要用来询问人的类别或职业
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