He will fly to New York next wekek?改同义句

人自然是无法飞的,所以可以改为：
He will go to New York by plane next week;
next week 和 by plane 都是后置状语,一讲时间,一讲方式,位置前后可以调换.
此外,语法上遇上“未来时”的体现方式有几种可以互换：
will + 动词 = be going to + 动词,或者在口语中可以 be gonna + 动词 也行.
He is going to fly to New York next week.(He's gonna fly to New York next week.口语）
楼上说的 leave for 是出发的意思没错,但必须加上 by plane 才算完整：
He will leave for New York by plane next week.
希望能对你的学习和理解能有帮助,别忘了采纳哦 .