Your sentence
ne+pas+croire+que
Words in this sentence
ne
not (used alone to negate a verb, now chiefly with only a few particular verbs; see usage notes); not, no (used before a verb, with a coordinating negative element usually following; see usage notes); used in a subordinate clause before a subjunctive verb (especially when the main verb expresses doubt or fear) to provide extra overtones of doubt or uncertainty (but not negating its verb); the so-called "pleonastic" or "expletive" ne; in comparative clauses usually translated with the positive sense of the subsequent negative
Particle
pas
The most common adverb of negation in French, typically translating into English as not, don't, doesn't, etc.; used as an intensifier in underlying rhetorical questions, mostly with voilà
Adverb
croire
to believe (someone); to believe, to accept as true; to believe, to have faith; to think of oneself as, to consider oneself
Verb
que
that (introduces a subordinate noun clause and connects it to its parent clause); Substitutes for another, previously stated conjunction.; when, no sooner; Links two noun phrases in apposition forming a clause without a (finite) verb, such that the complement acts as predicate.; introduces a comparison; than; as; only, just; but, nothing but; how (in rhetorical interjections)
Conjunction