Questions & Answers about Дедушка ловит рыбу каждое утро.
Why do we use the imperfective verb ловит instead of a perfective form?
We use the imperfective because the action happens каждое утро (every morning). Imperfective verbs are always used for repeated or habitual actions, whereas a perfective verb like поймает would mean he will catch a fish on one specific occasion.
Why is there no preposition before каждое утро to mean 'every morning'?
In Russian, when you state that an action happens 'every' time period (like morning, day, or week), you just put the time phrase directly into the accusative case without any preposition. Since утро is a neuter noun, its accusative form looks exactly the same as its dictionary form.
Дедушка ends in -а, which usually marks a feminine noun. Does it behave like a feminine word?
It changes its endings exactly like a feminine noun, but it is grammatically masculine because it refers to a male person. If you added an adjective here, it would be masculine, like мой дедушка, and if this sentence were in the past tense, the verb would take the masculine ending.
Can I use a single verb for 'fishing' instead of saying ловит рыбу?
Yes, you can use the verb рыбачить. Saying Дедушка рыбачит means 'Grandad is fishing' or 'Grandad fishes,' which carries the exact same meaning in everyday speech.