This article is a part of a large project which aim is a new, corpus-based grammar of contemporary Czech language. It deals with connectives that express meanings from the sphere of time and tense, particularly with their combinations (compound connectives), and with stylistic and pragmatic properties of them. We consider the connective 'kdyz' as a centre of this group of compound connectives and try to differ functions of combinations like 'az kdyz'; 'práve kdyz'; 'tehdy, kdyz'; 'kdyz potom'; 'kdyz jeste'; 'vzdycky kdyz'; etc. It is interesting to study the interference between temporal semantics and causal, conditional, concessive, as well as other meanings. As we have today large amount of data at our disposal (thanks to the Czech National Corpus), we are able to study different distribution of temporal connectives (and their combinations) in the patterns of functional styles and in various text types and genres (scientific texts, professional instructions, economic and sport reports and commentaries, interviews, fairy tales or novels, etc.).