I plan to do sth和I am planning to do sth的区别

I plan to do sth和I am planning to do sth的区别 plan to do sth.一定要用将来时态吗?例如：I am planning to go to the park. plan for sth和plan to do的区别 plan to do sth I am here to do sth 英语语法：i suppose to do sth和 i am supposed to do sth有何意思和用法上的区别 plan to do sth.和make a plan to do sth ,make plans to do sth wish to do sth和expect to do sth和hope to do sth的区别 be to do sth和will do sth的区别 plan sth.plan to do sth.plan for sth.这三个短语的区别是什么?可以互换么? plan+to do sth.还是doing sth.还是 do sth. practice doing sth.和practice to do sth.的区别