I had a bad day i had had a bad day 15 there's no special magic with had had , they don't really go together as a pair anymore than had wanted go together. I have come across a few sentences that contain have had.
Organic Chemistry Carbon Oxygen Hydrogen ppt download
So don't worry so much about how to use had had as a unit of. How james while john had had had had had had had had had had had a better effect on the teacher is correct sentence? In the last two weeks i haven't had much time, but i expect to be able to address your question soon.
Do you have any reference or evidence for this assertion about the past perfect?
Because it seems wrong to me, as a native english speaker, and google ngrams says that. For example, what is the difference between the following two sentences: Being a non native speaker of english i am not sure about the usage of had. I would like to know in what kind of situations we should use this combination.
In the last two weeks i haven't had much time, so i haven't got that quotation for you. In my academics i have learned that had is only used to show that something happened prior to some event in. It is used to describe experiences one has had in the past (and that hence influence the experience with which you speak today), changes over time, uncompleted. 例如：had he succeeded, he would have acquired a monopoly 1、have+过去分词：现在完成时表示的动作发生在过去，以now的时间为基点，但侧重对now产生的结果或造成的影响。 2.
