Nikolay Komolov 1) "I entered a room and switched the computer on" It rather sounds as if it is known, within the context, that there will be a computer in each room that you could enter. Same with the "TV" sentence. The more likely the object is to be found in a room, the less special the context has to be to support the sentence.
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Nikolay Komolov1) "I entered a room and switched the computer on"It rather sounds as if it is known, within the context, that there will be a computer in each room that you could enter. Same with the "TV" sentence. The more likely the object is to be found in a room, the less special the context has to be to support the sentence.
Nikolay
Nikolay KomolovEsch time during installation I get a message: ...Each time during installation I get the message: ...I am assuming that the actual text of the message follows the colon. If so, there is little difference between the two. Neither says anything definite about whether you do or do not get other messages.
Nikolay Komolov"I entered the hospital and saw the doctor"If there is no one specific doctor that we already know about, then normally it would be "a doctor". In a situation where we assume from general knowledge that one doctor will be present, "the doctor" can be used even when he or she has not already been mentioned. This doesn't usually apply to a h
Nikolay Komolov"I entered a classroom. The teacher was explaining a topic"Can we say "the teacher", even if the listener has no knowledge of any teacher?Yes. This is a good example of a situation in which "the" can be used for first mention. This is because, as you say, everyone understands from general knowledge that a classroom will have a teacher.
Nikolay KomolovIs it correct to say 1) "I entered a room and switched the computer on"It's possible, but it sounds strange to me. I'd say
Niko