离开前,请务必关好门窗.（make sure）
Please make sure to close the doors and windows before you leave.
他为别人做得越多,就觉得越开心（The more...）
The more he does for others,the happier he will be.
能承受困苦考验的人都值得我们尊敬（stand）
The man who can stand hardship is worthy of our respect.
他在晚会上太滑稽了,我们忍不住大笑起来（So...）
He was so funny at the party,so we could not help laughing.
他的讲话方式使比人感到放松（It..）这句话的汉语表达似乎有问题.