Let's happy together,Forget all my problem

Let's happy together ,Forget all my problem是什么意思 Let's happy together,Forget all my problem Let's be happy together. let's share their (happy)together Taking walks makes me forget all my problem.请问这里为什么make要加s? i never forget anything important let's have dinner together my (friend )fathers are all teachers.let's go (camp)together Let's Learn Together Let's stay together Let's-play-together. Let\'s be together Fate let us together we will be happy ,my wife,I Love you翻译中