"had better understand" is a correct and commonly used phrase in written English.
It is typically used to give advice or make a strong recommendation about a particular action or situation. Example: You had better understand the consequences of your actions before making a decision.
People had better understand that.
"The whites had better understand this while there is still time.
If governments would like to prevent that, they had better understand that actions speak louder than words.
People in this league had better understand the value of having the right kind of veteran leadership.
For Eastwood, they're all enduring the same ailment — war is hell — and those who are in a position to send soldiers into war had better understand that diagnosis.
(2) If you want to build a self-governing authority here, you had better understand that "shock and awe" is not just for war-making.
I could have skipped the 500 resumes if I had better understood the importance of networking.
The United States spent untold treasure and sacrificed thousands of lives fighting wars World War II in the Pacific, the Korean War and the Vietnam War--all of which might have been prevented if we had better understood the Chinese people.
One question I keep asking myself is: if I had taken the time to write his story while he was still living, would I have better understood Grandpa?
Using the ratio specific over non-specific knowledge, true-negatives seemed to have better understood the specific genetic information than non-informative individuals (P=0.0055).
The host-pathogen relationship is a complex and variable subject, but some interactions that have been studied have helped better understand this important relationship [ 4].
