Learn Turkish: Çok sis var, önümü net göremem. - There is a lot of fog, I cannot see in front of me clearly.

This word shows negative ability in the aorist tense. The verb root is gör- (to see). The regular negative would be görmem (I do not see). To add the meaning of "cannot", we insert the inability vowel -e- (or -a- for other words) between the root and the negative ending. This gives us göremem (I cannot see).

Why does the sentence use the aorist tense (göremem) instead of the present continuous (göremiyorum) if the fog is here right now?

Both are perfectly correct! Using the aorist negative (göremem) to express a physical inability caused by current conditions is very common in Turkish. It states a factual limit about your ability in this moment: "It is impossible for me to see," which sounds very natural here.

Can you break down the word önümü?

The root is ön (front). To say "in front of me", Turkish uses the possessive to say "my front", which is önüm. Because this is the specific thing you cannot see, it acts as the direct object of the verb and needs the accusative case suffix -ü. This gives us ön + -üm + -ü = önümü.

Why does net mean "clearly" here? Isn't it an adjective meaning "clear"?