You cannot use "came" after "have".
Depending on context, you can use "came to expect", "have come to expect", "had come to expect".
Student or Learner
Hello, is the expression "come to expect" always the same in every tense?
For example, I came across this sentence in an exam book: We have "come to expect" that all news will be at the touch of a button.
I thought that the correct way of using that phrase would be: We have came to expect that....
Don't forget that not all verbs are constructed in the same way in different tenses.
I have come
I have tried.
"To come" is an irregular verb.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.