The present tense of the indicative describes actions that occur at the present time, with continuous or ongoing aspect. The stem is obtained by dropping the final -ω from the end of the first principal part; the accent is recessive. Its middle and passive forms are identical, but context will help you distinguish between the uses.
Thematic verbs
Person and Number
Active (1st principal part)
Middle and Passive (1st principal part)
First singular
-ω
-ομαι
Second singular
-εις
-ει/ῃ
Third singular
-ει
-εται
First plural
-ομεν
-ομεθα
Second plural
-ετε
-εσθε
Third plural
-ουσι(ν)
-ονται
Example from κελεύω:
Person and Number
Active (1st principal part)
Middle and Passive (1st principal part)
First singular
κελεύω
κελεύομαι
Second singular
κελεύεις
κελεύει/κελεύῃ
Third singular
κελεύει
κελεύεται
First plural
κελεύομεν
κελευόμεθα
Second plural
κελεύετε
κελεύεσθε
Third plural
κελεύουσι(ν)
κελεύονται
Athematic verbs like δείκνυμι and δίδωμι
The conjugation of the athematic verbs δείκνυμι and δίδωμι are provided below. Because there are some shifts within the stems, you will need to memorize them separately.