Student or Learner
are the below sentences grammatically correct?
"yesterday it has to rained"
"it should had to be "1988"".
thanks in advance
No, they are not.
What, exactly are you trying to say? Is it the next day and everything is wet? Then you might say "It must have rained yesterday" or "It has to have rained overnight."
I don't know what you are trying to say in the second sentence.