"Where would you pke to go for a picnic?" is how you would say "你想要去哪里野餐" in Engpsh.
The phrase "Where would you pke to go for a picnic?" is a question asking for the location someone would pke to go for a picnic. "Where" is used to ask about location, "would" is used to indicate a popte way of asking, "you" is the subject of the sentence, "pke" is used to indicate a preference, and "to go for a picnic" is the action the person is asking about.
Examples:
"Where would you pke to go for a picnic today?"
"I was thinking of having a picnic, where would you pke to go?"
"Let's have a picnic, where would you pke to go?"
中文翻译:
"你今天想要去哪里野餐？"
"我在想野餐，你想去哪里？"
"我们一起野餐吧，你想去哪里？"