comments on Servando's post

Servando,

I'm glad you decided to post a summary of the article. It is not an easy one and summarizing it is hard, but that's the kind of reading and writing you will need to do in college.

I've written some comments about your summary below it. 


A new research realized in Harvard University, shows people spend half of their time daydreaming, and they say that their mind wandering is a sign of unhappiness. Over 2200 volunteers participated in this publishing, and they downloaded an iPhone app, where they sent more than 250000 messages during 24 hours. This research concludes that us spend more than 46% of our waking hours thinking in our past, and the researchers said, we are a unhappy mind.



"Research" is not countable- you can't say "one research, two researches, three researches"- so "a research" is incorrect. It should just be "research."

250000 needs a COMMA ("250,000")


Your sentences have correct structure. 

There's an error in the last one.  The form is this: THAT + SUBJECT PRONOUN+ VERB , but "us" is not a SUBJECT PRONOUN. It is an "OBJECT PRONOUN. The SUBJECT PRONOUN is "we." So the correct form is:

"that we spend more than..." 

I think the error is because the article had "Most of us spend...." In that case, "us" is correct, because it is the OBJECT of the preposition "of."

Speaking of prepositions, "thinking in our past" should be "thinking of our past." Prepositions in English (of, in, on, etc.) are difficult. You will gradually remember how to use them correctly. 

"We are a unhappy mind" could be "we have unhappy minds" (plural of "mind") or- better, I think, "our minds are unhappy." 

Anyway, the large structural elements of the summary are correct.