Questions & Answers about wǒ zhōumò xǐhuan zài gōngyuán tī zúqiú.
Chinese has a fairly fixed preferred order:
Subject + Time + (Manner) + Place + Verb + Object
So:
- 我 (subject)
- 周末 (time: on weekends)
- 喜欢 (main verb: like)
- 在公园 (place: in the park)
- 踢足球 (verb + object: play football/soccer)
Putting 周末 after 我 follows the "Subject + Time" pattern.
You could say 周末我喜欢在公园踢足球, which is also correct and just shifts the emphasis slightly to the time (on weekends) at the very beginning. But 周末 almost never goes at the very end of this sentence.
Here 在 marks the location where the action happens:
- 在公园踢足球 = play soccer in the park
Without 在, 公园 would just look like another noun, and it wouldn’t be clear that it’s a place where you do the action.
Compare:
我周末喜欢在公园踢足球。
On weekends I like *to play soccer in the park.*我周末喜欢去公园踢足球。
On weekends I like *to go to the park to play soccer.*
在 + place = where you are doing something.
去 + place = you go to that place.
So 在公园 is necessary here because you’re describing the location of the action, not a movement toward the park.