1) lead in: which sentenses are correst?
* most fossils of species X were found in Tennessee or Kentucky(only one tag)
*most fossils of species X were found in Tennessee or in Kentucky(only one tag)
*most fossils of species X were found either in Tennessee or Kentucky
*most fossils of species X were found either in Tennessee or in Kentucky
*most fossils of species X were found in either Tennessee or in Kentucky
*most fossils of species X were found in either Tennessee or Kentucky
2) basic mechanical principle of parallelism:
*the parallel structures are indicated by parallel tags(either-or)
* the words that folloew these tags are automatically included in the parallel structures
*these following words must have parallel grammmer
*if there is only one tag, proceed from right to left(look at the words following the tags and decide what words you need on the left)
e.g : most fossils of species X were found in Tennessee or Kentucky(only one tag)
K is the following word, so we need another word on the left, which is T
most fossils of species X were found in Tennessee or in Kentucky(only one tag)
in K is the following word, so we need another word on the left, which is in T
* there are imperfect parallelism