D - DO, DOES, DID
(practice with you, she, he, we, etc)
Did you eat pancakes yesterday?
Does your partner eat pancakes?
Do pancakes take a long time to prepare?
Do your friends like pancakes?
H - HAVE, HAS, HAD
(practice with you, she, he, we, etc)
Had you ever eaten pancakes before you turned 5?
Have you eaten pancakes this week? Has your partner eaten pancakes?
Will you have eaten pancakes again before the end of the month?
Would you have eaten pancakes this morning if I had made them for you?
Should you have eaten pancakes....?
Could you have eaten pancakes...?
Could your partner have eaten pancakes....?
B - ARE, IS, AM, WAS, WERE
(practice with you, she, he, we, etc)
Are you eating pancakes now? Is your boss eating pancakes right now?
Were you eating pancakes at 8am? Was your boss eating pancakes?
Will you be eating pancakes when the show starts? Will your partner be eating pancakes?
Would you be eating pancakes?
Have you been eating pancakes lately?
Could you have been eating pancakes?