The document might have two tool clauses followed by a procedure clause, or three location clauses in a row. Suppose you want to produce output that looks like this
For each location, the SELECT clause retrieves the location ID and the tools used at that location.
对于每个位置,SELECT子句检索位置ID以及此位置所用的工具。
3
At the clause stratum, a locative prepositional phrase functions to foreground the temporal location as a marked theme while it functions to background the spatial location.