YHVH is how it appears in the Hebrew Bible. But we do not know what the vowels are, and Jewish custom forbids the pronunciation of the name.
When speaking Hebrew you would say "el" which is short for "elohim".
eifo hashem? (?איפה ה׳)
Elohim noshem
ha'am hanivchar (העם ×”× ×‘×—×•×¨)
nes hashem (× ×¡ ה׳)
your god your god = elohecha elohecha (אלוקך אלוקך)
Hebrew doesn't have a subjunctive mood, but instead you could say "God is glorified," which is Hashem nehedar (ה׳ × ×”×“×¨)
In Hebrew? In Biblical Hebrew it would be Elohenu Eloah ehadh. Or you could say the Shema which is Sh'ma Yisrael Adonai Elohenu Adonai Ehhadh.
God is with us = "ha shem imanu" (ה׳ ×¢×ž× ×•)
eved hashem (עבד ה׳), which also means "servant of God" (in Hebrew, there's no distinction between slave and servant).
rahk hashem (רק השם)
kokhav hashem (כוחב השם)
Hashem peetsah (ה׳ פיצה)