How to distinguish the possessive of compound adjectives from that of nouns? There is a question about compound adjective and possessive, both of them seem to be OK, but the standard answer is C. B. what's wrong with it! How far is it from your home to the museum? It's about ________ .We'd better take a bus to go there. A twenty minute's walk B twenty -minute walk C twenty minutes' walk What should I choose? Why?

How to distinguish the possessive of compound adjectives from that of nouns? There is a question about compound adjective and possessive, both of them seem to be OK, but the standard answer is C. B. what's wrong with it! How far is it from your home to the museum? It's about ________ .We'd better take a bus to go there. A twenty minute's walk B twenty -minute walk C twenty minutes' walk What should I choose? Why?

Item B should be changed to a twenty minute walk

When do nouns modify nouns and when do nouns possessive
When do nouns modify nouns and when do they use the possessive case?
For example: "the Sawyer family" "the Sawyer's family"?

When a noun is explained, the possessive case is not added
Like shoe store.shoe A shop is a shop that sells shoes
When expressing affiliation, use possessive case:
Like Tom's TV.TV It's Tom's thing. Tom is used to explain TV
It should be in the front. Because this family is a family of people surnamed s * *, not a kind of affiliation. That family name just explains the family name

Are the singular and plural of family isomorphic

No
As a family member, he is uncountable, so there is no plural form, and the predicate verb is also singular
As a family, there are singular and plural
There are many families in our town

On the concept of singular and plural of family
In the coming summer holidays,my family___ Going to take a trip to Qingdao?

are...
Family here means family. It's plural
Use singular only when referring to family