Why vs what for? Both have almost the same meaning as why, they might be interchangeable but not always. What … for has different contextual shades.
What are you reading this book for? (purpose, goal: what do you wan to achieve?)
You are always reading this book. What for? (purpose, goal: what do you wan to achieve?)
For what are you reading this book? (purpose, goal: what do you wan to achieve?)
Why are you reading this book? (reason: what’s the reason you are reading this book?)
Links on introduction to tenses
- Components: Verb, Action Verb, Stative Verb
- Verb: Where is the border between Action and Stative Verbs?
- Action vs Inaction
- Frequency of actions (/inactions and states)
- Time of actions (signal words)
- 5 Types of Sentences
- Declarative Sentence
- Imperative Sentence
- Interrogative Sentence
- Exclamatory Sentence
- Moment of speaking
- Finished vs unfinished vs unspecified period of time
- Continuous Actions in Linguistics
Links on Present Simple
- Present Simple: Why Simple? Isn’t it complicated?
- Present Indefinite why indefinite?
- Repeated actions: Present Simple tense
- Frequency words: Present Simple with repeated actions
- General realities and truths, world truths: Present Simple
- Stating facts in Present Simple Tense
- Unchanging (permanent) situations: Present Simple
- Present Simple: Past actions! Jokes, stories, books, etc.
- Present Simple: Future meaning for fixed actions
- Actions / states ongoing now: Present Simple
one of the sources: wikipedia.org