I see, but I always see these forms in the internet sites such as:We have decided that you will never fit environment.
Learn English online - English Grammar - Sequence of Tenses
Exceptions: A Past Tense in the Principal clause is followed by a Present Indefinite Tense in the Subordinate Clause when there is a Universal Truth, Habitual fact. Geographical Truth etc.:
Copernicus proved (main clause) that the earth moves round the sun (subordinate clause).
Please tell me if they are fine ok not...
Last edited by aysaa; 24-Feb-2012 at 23:49.
It’s a complex issue, not made easier by websites that suggest there is a clear set of rules for the so-called ‘sequence of tenses’
Let’s look at two of the points.
To state a general truth, use the present tense: The Deists believed that the universe is like a giant clock.
The use of ‘believed’, past tense, suggests that the person who created this sentence may not believe that the universe is like a giant clock (i.e this is not a universal truth). That is why the sentence is much more likely to be: The Deists believed that the universe was like a giant clock. Of course, if there are still Deists who believe this, then we can report this as: The Deists believe that the universe is like a giant clock. That, however, is not a universal truth but a astatement about a current situation.
George: I am going to London next year, and I am not coming back!
Jessica: I don't care about it. I have already known that you are going to London next year again. You are always telling the same story!
This is faulty from the beginning. I have already known is unnatural. We’d say: I already know or I already knew.