When I was studying, I came across this issue that bugged me. In many sentences, a verb after a verb won't be conjugated(amos, ías, an, etc.) Here is an example:
"pretendía estar dormido"
Why isn't estar conjugated? Shouldn't it be conjugated to estuve/estaba? If you can, please explain when I should conjugate / NOT conjugate verbs. Thanks for your help and feedback.