How many different kinds of languages do we have in the world these days?
举一反三
- How many levels of usage do languages have
- How many days in a week?What do we speak the days in English?
- From a stylistic point of view, how many different groups of words do we have in total? What are they?
- How ___ time do we have? A: many B: much
- How many sources do we have when conducting reference checking?