It may be helpful to think of the Subjunctive as the 'mood of doubtful assertion'
Subjunctives occur in all three of the voices (active, middle, passive), but only in the present or aorist tense. Thus it is similar to the imperative and infinitive.
Subjunctive
A) λυω
B) λυῃς
C) λυῃ
D) λυωμεν
E) λυητε
F) λυωσιν
G) λυσω
H) λυσῃς
I) λυσῃ
J) λυσωμεν
K) λυσητε
L) λυσωσιν
M) βαλω
N) βαλῃς
O) βαλῃ
P) βαλωμεν
Q) βαλητε
R) βαλωσιν
S) λυθω
T) λυθῃς
U) λυθῃ
V) λυθωμεν
W) λυθητε
X) λυθωσιν
ἀν means conditional particle
ἀχρι + gen means until
ἱνα + subj means in order that
ὁπως + subj means in order that
ἐαν + subj is an alternative for ἀν (also can mean 'if')
ὁταν + subj means whenever
ἀγρος means field
ἀνεμος means wind
διακονος means servant
ἐχθρος means enemy
ἡλιος means sun
οἰνος means wine
ἀναιρεω means I take away, kill
κατηγορεω means I accuse
ὁμολογεω means I promise, confess
γενεα means family, generation
An adjective that often functions as a noun: πτωχος means poor
γλωσσα means tongue or language
γραφη means writing or scripture
διαθηκη means covenant, last will and testament
διακονια means service, ministry
ἐπαγγελια means promise
ἐπιθυμια means desire
θυρα means door
Ἰουδαια means Judea
μαρτυρια means testimony or witness
ὀργη means anger, wrath
σοφια means wisdom
σωτηρια means salvation
τιμη means price, value, honour
φυλακη means watch (guards), prison
χρεια means need
In the subjunctive the difference between the tenses is the same - the present if the action is being viewed as part of a process (continuous or repeated), otherwise the Aorist, just as in the Infinitive and Imperative.
Clauses that refer to a person, place of time that is not definite use the word ἀν plus the subjunctive to express this indefiniteness. Often, this indefiniteness is expressed in English by the word 'ever'
ἱνα + subj = purpose
Note: ὁπως + subj is a more unusual alternative for ἱνα + subjunctive.
The subjunctive can be used on its own in the 1st person plural form to express an exhortation, when the speaker is exhorting others to join him or her in an action.