生活就像一场远行的旅程，身边的每个人都是你的同伴，不管是否能陪你走到终点，都会给你留下一些难忘的回忆。life,like a trip， of which everyone is your companion, in each phase left unforgettable story for us , whether he will by your side in the end ，life是主语，之后的所有都是在修饰这个词的，like a trip是插入语，后面的which是指代life的，所以这句句子的主要成分就是everyone is your companion of life.不懂再问我好了...
主体是life like a trip left unforgettable story for us。which everyone is your companion in each phase 是一个定语从句，修饰trip.whether he will by your side in the end 是单独的一个句子，这个应该不影响理解句子...
