If I Had Lasik Years Ago And My Vision Is Changing Why Is This Happening And What Should I Do

Case Report Changing Vision After Lasik Ophthalmologyweb I have seen several sentences in english where some writers have written had twice in a row. i am a bit confused about when the grammar calls for using had had. for example: i had had my car. 如何正确理解 had done、have done、have been doing 这 3 种时态？ 语法书上的那些解释，看来看去都不是很能理解，也谢绝照搬语法书的解释。 看一次，过一段时间又忘了，总不是能很好的区分，也不知道怎么很好的实用这三种时态。 … 显示全部 关注者 1,412.

Lasik Faqs High Myopia Astigmatism Side Effects Age Limit Clearvision Eye Clinic Lasik For example, what is the difference between the following two sentences: i had a bad day i had had a bad day. I have come across a few sentences that contain "have had". i would like to know in what kind of situations we should use this combination. Xiaomi had端到端全场景智驾正式发布，有哪些亮点？ 36氪获悉，小米董事长兼ceo雷军发布微博表示，xiaomi had端到端全场景智驾正式发布，已开启全量推送。. The second one doesn't technically make it clear that you had eaten the chocolates before dinner, but then again it's really the only possible meaning in that context so the two sentences don't really have much difference in meaning.

How Lasik Transformed My Vision And My Life Minnesota Eye Consultants Xiaomi had端到端全场景智驾正式发布，有哪些亮点？ 36氪获悉，小米董事长兼ceo雷军发布微博表示，xiaomi had端到端全场景智驾正式发布，已开启全量推送。. The second one doesn't technically make it clear that you had eaten the chocolates before dinner, but then again it's really the only possible meaning in that context so the two sentences don't really have much difference in meaning. Had是have的过去式（一般过去时） have had 是have的 现在完成时 区别： 1、i had a girlfriend. 我有过一个女朋友，是指过去交过女朋友这件事，但现在没有，即使有，也不是之前那个。 2、i have had a girlfriend. 我有一个女朋友，指过去有女朋友这个状态，现在已经没有了。 （一个动作是时间点，一个动作是. Had是过去完成时的助动词，所以后面一定接的是动词的过去分词，例如she'd done something wrong，done是分词 2、’s，可以是所有格，可以是is，也可以是has. Had 表示 过去完成时，指过去的某一段时间内完成的事情，之前的动作与现阶段时间不连续。 例：i had worked for this company for 10 years. 我曾经为这家公司工作10年。 是过去的过去发生的事情，如果要为上文加一个后续内容，可以是：i have retired from this company 2 years ago. If i want to say let's check if the entry , and do this and that if so. which one should i use? has changed had changed was changed has been changed and an explanation would be great!.