1.Shall we go for a swim tomorrow.2.This is a wonderful place for a picnic.这两个句子的for是什么意思,什么用法,要是换成to不行吗

Shall we go out for a walk?改为否定句 Shall we go out for a work?同义句转换 shall we go for a walk ____ _____watching tv shall we go for a picnic next sunday Let's go for a walk,shall we?肯定回答? Shall we go for a (r )in the car shall we go out for a walk改为同义句 （ ）( ) ( )go out for a walk Shall we go for a walk改为同义句___ ____ going for a walk? Shall we go for a swim?和shall we go for a swimming?那个正确?swim和swimming都有名词游泳的意思 Shall we go for a picnic tomorrow?改同义句：（）（）（）go for a picnic tomorrow? shall we go for a picnic tomorrow ? 同义句转换 __ __ go for a picnic tomorrow ? shall we go to see a film Shall we go out for a walk after dinner?(改为同义句） shall we go out for a walk after supper?=__ __ __a walk after dinner Shall we go out for a walk after supper?改同意句 Let's go for a walk after supper,shall we的同义句 Shall we go for a walk after supper?的同义句 Let us go for a walk after supper,_____?选shall we 还是will you