Language Point 9
People tend to live longer in most places. (Para. 4)
Meaning: People are likely to live longer in most places.
tend: v. be likely
Please notice that the verb "tend" is often followed by an infinitive verb.
She tends to lose her temper if you disagree with her.
你要是不同意她的意见,她可能会发火。
Prices tend to rise at this time of year.
每年这个时候物价往往会上涨。
He tends to get quarrelsome when he is drunk.
他喝醉后就容易与人争吵。