How to write 哎

哎 [āi] 1. Interjection, indicating dissatisfaction or reminding. Example: "哎，你怎么没来呢！" (Hey, why didn't you come!) Example: "哎，你们看，谁来了！" (Hey, look, who has come!) 2. Interjection (exclamation). 1) Indicates satisfaction or admiration ([En.] yes). Example: "哎，这就对了!" (Aha, this is right!) 2) Indicates surprise or dissatisfaction ([En.] why). Example: "哎，你怎么不早说!" (Why didn't you say it earlier!) 3) Indicates a reminder ([En.] look out). Example: "哎，小声点" (Hey, be quiet.) 4) Indicates realization ([En.] aha). Example: "哎!原来是这样" (Aha! So that's how it is.) 5) Indicates a greeting ([En.] hello). Example: "哎，大婶，我们回头再来看你" (Hello, madam, we will come back to see you.) 6) Indicates agreement ([En.] yes). Example: "李梅！""哎!我在给病人换药，一会儿就来。" (Li Mei! "Yes! I'm changing the medicine for the patient, I'll be there in a moment.") 3. Variant pronunciation ei2, indicating surprise or suddenly remembering something to tell the other person (sometimes used in a lower tone). Example: "哎，他怎么没来？" (Hey, why didn't he come?) Example: "哎，这事你听说了吗？" (Hey, have you heard about this?) Example: "哎，我想起来了。" (Hey, I just remembered.) 4. Variant pronunciation ei3, indicating dissatisfaction or disagreement. Example: "哎，你这就不对了。" (Hey, that's not right.) Example: "哎，这个字不这样写。" (Hey, this character is not written like this.) 5. Variant pronunciation ei4: 1) Indicates regret or remorse. Example: "哎，别提了，算我倒霉!" (Hey, don't mention it, I'm just unlucky!) Example: "哎，我真不该来这里。" (Hey, I really shouldn't have come here.) 2) Indicates consent or acknowledgment. Example: "哎，去吧!" (Yes, go ahead!) Example: "哎，这就对了!" (Yes, this is right!)