"If” is expressed by a suffix and a separate word. The suffix is always required, the separate word is entirely optional.
1. Suffix of “if” (always required, appended to the verb) :
The personal pronoun suffixes (m/n/-/k/niz/ler) are exactly as with “tense of past” (see the section “Tense of past” above).
If i am here, etc:
Note: Separate word form for this suffix: ise (less frequently used) (not stressed)
2. Separate words of “if": “eğer"
Synonym of foreign origin for “eğer”: şayet