【HSK Standard Course 1 六、你儿子在哪儿工作？ Where does your son work】 你儿子在哪儿工作？
《在家》
A：小猫²在哪儿？^➊
B：小猫²在那儿。
A：小狗²在哪儿？^➋
B：小狗²在椅子下面^★。^➌

《在车站^★》
A：你在哪儿工作？
B：我在学校工作。
A：你儿子在哪儿工作？
B：我儿子在医院工作， 他是医生。

《打电话》
A：你爸爸在家吗？
B：不在家。
A：他在哪儿呢？^➍
B：他在医院。

生词 New Words：
猫 māo : cat.
狗 gǒu : dog.
下面 xiàmiàn : below, under.
车站 chēzhàn : rail station; bus stop.

语法要点 Grammar Points:
➊小猫在哪儿？
在 (zài): (1) preposition: (located) at; (2) (to be) in; to exist; (3) in the middle of doing sth; (indicating an action in progress)
(1) If a sentence has other verb and "在 + location/time" before the verb or sometimes after the verb, then it is adverb phrase to modify verb.
    我在家里看电视。 Wǒ zài jiālǐ kàn diànshì. - I am watching TV at home.
    我把水果放在桌子上。 Wǒ bǎ shuǐguǒ fàng zài zhuōzi shàng. - I put fruits on the table.
(2) If a sentence has no other verb, then "在 + location" is verb phrase "to be at .../to exist".
    我在家，你在哪儿？ Wǒ zài jiālǐ kàn diànshì. - I am watching TV at home.
    钱包在，但是钱没了。 Qiánbāo zài, dànshì qián méiliǎo. - The wallet is here but the money is gone.
(3) Subject + 在 + Verb: 在 is adverb meaning an action is in the process.
    我在开车。 Wǒ zài kāichē. - I am driving the car.

➋小狗在哪儿？
哪儿/哪里. “where". It is used to raise a question about location.
    哪儿/哪里有饺子？饭店里有。 Nǎ'er/nǎli yǒu jiǎozi? Fàndiàn li yǒu. - Where is dumpling? Restaurants have dumplings.

➌小狗在椅子下面。
...边/...面. Literally 面 means "surface" and 边 means "side". But when they were used after a noun, they often have same meaning. And ...边 is often used in spoken Chinese. ...面 is more formal.
    我在你的后面/后边 Wǒ zài nǐ de hòumian/hòubian. - I am behind you.
    车子里面/里边有三个人 Chēzi lǐmiàn/lǐbian yǒusān gèrén. - There are three people in the car.
    北京在中国的北面/北边 Běijīng zài Zhōngguó de běimiàn/běibian. - Beijing is in the northern part of China.

➍他在哪儿呢？
呢 (ne): particle.It has several applications when it is used in the end of sentence.
(1) indicating that a previously asked question is to be applied to the preceding word, like "What about ...?", "And ...?"
    我睡觉了，你呢？ Wǒ shuìjiàole, nǐ ne? - I go to sleep. How about you?
(2) inquiring about location, like "Where is ...?"
    我的书呢？ Wǒ de shū ne? - Where is my book?
(3) signaling a pause, to emphasize the preceding words and allow the listener time to take them on board, like "ok?", "are you with me?"
    你想踢足球呢，还是打篮球呢？
    Nǐ xiǎng tī zúqiú ne, háishì dǎ lánqiú ne? - Will you play soccer or basketball?