英语的固定搭配答:It’s necessary for you to lock the car when you do not use it. 当你不用车的时候,锁车是有必要的。 2) It’s very kind of you to help us. 他帮助我们,他真好。 Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的...