Not "This is she bag." — say "This is her bag.". 东西前面要用 her 来表示是她的，不是 she。
试一试: Lars: Is Amina here? Mei: No, she isn't. But ___ phone is on the desk. 选出对应的词： (her / she / hers) 答案: her — 要表示手机是 Amina（she）的，东西前面用 her：her phone（不是 "she"）。
our, their, its
群体和事物也有对应的词：we → our，they → their，it → its。
This is our house.
That is their dog.
The cat licks its paw.
Not "This is we house." — say "This is our house.". 东西前面，we 变成 our。
试一试: Sofia: Where are Mei and Wei? Diego: They are in ___ room. 选出对应的词： (their / they / theirs) 答案: their — Mei and Wei = they，东西前面要变成 their：their room（不是 "they"）。
总是放在名词前面
表示所属的词放在 最前面，然后才是所属的东西。
my book ✓
her phone ✓
their house ✓
Not "book my" — say "my book". 表示所属的词放在东西 前面，不是后面。
试一试: Camila: Is Liam in class? Hiroshi: Yes, he is. That is ___ on the desk. 选出合适的说法： (his notebook / notebook his / notebook) 答案: his notebook — 表示所属的词放最前面，然后才是东西：his notebook（不是 "notebook his"）。
its（不是 it's）
its = 它拥有某样东西。it's = it is 的缩写。表示所属时，用没有撇号的 its。
The dog wagged its tail.
The city has its own park.
The plan has its good points.
Not "The dog wagged it's tail." — say "The dog wagged its tail.". it's 的意思是 'it is'，表示所属要用没有撇号的 its。
试一试: The dog hurt ___ leg. (its / it's) 答案: its — 腿是狗的，所以用 its（没有撇号）。"It's" 的意思是 "it is"，这里不合适。
your / you're
you 也是一样的道理。your = 你拥有某样东西。you're = you are 的缩写。表示所属时，用没有撇号的 your。
Your bag is here.
You're late.
Your keys are on the desk.
Not "You're bag is here." — say "Your bag is here.". you're 的意思是 you are，所以 "You're bag" 说的是 "You are bag"。表示所属的词是 your。
试一试: ___ keys are in the bag. (Your / You're / You) 答案: Your — 钥匙是你的，所以用 Your（没有撇号）。"You're" 的意思是 you are，而 "You keys" 里根本没有表示所属的词。
试一试: Remember: who owns it? A: Where is Hiroshi's bike? B: He parked ___ bike outside. (his / her / he) 答案: his — Hiroshi = he，所以表示所属的词是 his：his bike。（把词和所有者对应起来。）
常见错误有哪些？
错误
正确
原因
This is she bag.
This is her bag.
东西前面要用 her 来表示是她的，不是 she。
This is we house.
This is our house.
东西前面，we 变成 our。
book my
my book
表示所属的词放在东西 前面，不是后面。
The dog wagged it's tail.
The dog wagged its tail.
it's 的意思是 'it is'，表示所属要用没有撇号的 its。
You're bag is here.
Your bag is here.
you're 的意思是 you are，所以 "You're bag" 说的是 "You are bag"。表示所属的词是 your。