"The man is happy."
The key is when the nikudot are present (you can find them in the google translator.) type in man--איש will come up, but in the alternatives, about the 4th down, under "noun" is גֶבֶר the vowel under each consonant is a "segol" pronounced ey, as in hey. a rule is that a double segol--or segolot as seen here, is pronounced in the rather un-Hebrew emphasis on the first syllable, hence GAY-veir, rather than gay-VEIR. Adding the ה doesn't change the strong emphasis on the GAY. so the whole thing is ha-Gay-veir. Keep the double segol in mind--it is VERY common in Hebrew--and you will always know how to pronounce it.