ceedhanna posted:• Which sentence is correct? (1) When the dog barked , they were trying to sleep. (2) When the dog was barking , they were trying to sleep. (Is it preferred to use while?)
Hi, Ceedhanna: Both sentences are correct. Sentence (1) suggests that the dog barked once, and (2) expresses that the dog was barking repeatedly while they were trying to sleep. No, it is not preferred to use "while." You can use "while" or "when." It is your grammatical right to choose. Celebrate your freedom.
ceedhanna posted:• Does (when) mean (after)? (3) When the dog barked, they tried to sleep.
Yes, and the sentence is extremely unnatural and nonnative.
ceedhanna posted:• Are there two choices for this sentence? When Sami was drawing, his sister ………………… a poem. a) had writing b) was writing c) has written d) wrote
The only answer that works for me is (b) ("When Sami was drawing, his sister was writing a poem"). Choice (d) ("wrote") would work if you changed "when" to "while": "While Sami was drawing, his sister wrote a poem." You could even say "While Sami drew, his sister wrote a poem", though the progressive is more usual in "while"-clauses. One of the choices you have given is totally ungrammatical. Can you tell which one it is?