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礼貌高级句式 i wonder if i could invite you to dinner tomorrow evening. 类似的句式 would it be possible for to... i would like to.. please... i would be grateful if you could..... i should be most grateful if you could.... i would appreciate it if you could... we were windering if you could 表示谢绝： i would love to , but i am afraid i have already....... 表示建议： i think we ........ i prefer....if you do not mind. i would rather....if you do not mind, 常见的抱怨批评导语句型有： i must complain about... i wish to make a complain about... i am writing to complain about one annoying aspect of your service... i regret to inform you that.. i am sorry to inform you that i have always been interested in ....until you... i have always enjoyed....until you..... i am writing to express my dissatisfaction with the quality of.... i am not satisfied with.... 表达抱怨批评情绪的方式： | 
