When: Question words, wh-questions is a very important topic. It contains a question construction such as since when.
When: Question words
When are you coming?
Since when is used in perfect line of tenses. For instance, present perfect tense. However, we can use it in the other tenses too.
Since when do we as a nation, as a community, put money ahead of everything else?
The above sentence is in present simple tense.
Since when do you know more about monetary policy than the Fed Chairman??
Same here. Present simple.
Since when has this been an issue?
Since when have you believed in paradise?
The above 2 sentences are in present perfect tense.
Since when has he been doing anything right!?
The above sentence is in present perfect continuous tense.
All the above examples sound sarcastic. It looks like the “real” question using Present Perfect Continues or Present Perfect with since when, in colloquial speech, is dying out.
Since when have you been waiting for me? – I’ve been waiting for you since 2 pm.
Also on question words:
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
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