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1answer
95 views

What tense to use when reporting something which has never been true or never happened? [duplicate]

The report said that years ago city planners had planned to build a facility that turns salt water into fresh water, but financial woes made that impossible. In this sentence should turned be ...
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2answers
204 views

Can verb tense be changed mid-sentence for something that still exists?

Look at this sentence: I knew that the sky is blue. To me, it doesn't make sense to say the sky was blue since it still is blue. Even so, is it grammatically incorrect to say I knew that the sky ...
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1answer
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Questions in indirect speech and verb tense change

Today I had another English lesson and all students were instructed by teacher to ask each other few predefined questions and then to report them. I got the following questions: "What kind of ...