I've read on stackexchange that どうやって can be used to mean "what did you do in order to x" どうやってお医者になったか? - What did you do in order to become a doctor? This definition makes alot of sense to ...
When I was first learning Japanese, I learned that the explanatory form, -んです is always constructed by conjugating the verb in short form and adding -んです, and that the です part is never conjugated. But ...
This is a two part question, both pertaining to expressions involving "必要". What is the difference between 必要がある and -なくてはいけない/ -なければならない? The difference between the latter two expressions is ...