It is not often that you get such an opportunity.
你得到這樣的機會，可不是常有的`事。
Men often don't like to share their problems.
男人往往不喜歡把自己的問題告訴他人。
We don't often have time to talk.
我們常常沒有時間談話。
People are often afraid of things they don't understand.
人往往對自己不懂的東西感到恐懼。
I often think about my friends back home.
我常常想起老家的朋友。