Kriol has a single clear tense marker, the past tense auxiliary/particle bin. (Although Hudson 1985: 29 notes a completive aspect meaning of this marker). Present tense is unmarked. Markers with future time reference also have a modal meaning. These are garra~gata~gota with a meaning of future or obligation and wana~andi~a
with an optative or potential meaning (usually with future time reference, but compatible with the past tense marker).
Aspectual distinctions are expressed by the auxiliary/particle yusda 'habitual past’, the particle oldei~orlas~ala 'always; habitual’ (compatible with the past tense marker) and by two progressive verb suffixes (also compatible with past tense as well as future markers). There remains a question as to whether these should be described as fully-fledged inflectional aspectual markers. Descriptions often label the -(a)bat marker as 'continuous' or 'iterative' and stress its link with verbal pluractionality and plural participants (e.g. Hudson 1985: 40–41), which would make it more of a lexical aspect/derivational marker. However, it does seem to be correlated with prototypical progressive contexts.
Source: Sandefur and Sandefur 1982: 61
Source: Sandefur and Sandefur 1982: 65
Source: Sandefur and Sandefur 1982: 65
Source: Sandefur and Sandefur 1982: 61
Source: Sandefur and Sandefur 1982: 61
Source: Angelo et al. 1998