I have a question regarding using present perfect and simple past within the same sentence. Does it make sense to say the following sentences?
"He has agreed to help me, so I did not do my homework."
"She has suddenly decided to go back, so I decided to go alone."
And I'm curious about which tense comes first. When you use present perfect and simple past in the same sentence, did simple past take place first and is present perfect more recent? Or does it depend on context?
I read the following sentence in a news article: "[she] quietly slipped away today from the hospital where she has been staying since being freed..." It seems like this sentence is using simple past and present perfect at the same time. Is this a different case? I know that tenses have to match, but are there exceptions?
I also saw this sentence: "If you have just registered, you received your CURRENT bill via USPS."