重點講解：
1. in general
總的來說；總體上來看；大體上；
eg. She is in general reckoned to draw extremely well.
普遍的評價是她的繪畫十分高明G=An3Vwc@3UiP6O。
eg. In general, people don't like to be made fun of.
大體上講，人們都不喜歡被捉弄%WuVg+jy@U。
2. run around
（尤指孩子）到處玩耍游逛；
eg. I used to run around and play.
我過去常跑來跑去做游戲E~h2ncCLed,r|1。
eg. The young people run around kicking a ball, wearing themselves out.
年輕人跑來跑去踢著球，把自己弄得精疲力竭eP8@V_E6NV。
3. start off
從…開始；從…著手；
eg. He started off with one small factory, and now he's the head of an oil empire.
他開始只經營一家小工廠，如今已成為一個石油大企業的頭兒*0!HJmo~oM_~d8+by)bA。
eg. The discussion started off mildly enough.
討論頗為溫和地開展起來!I&CAqI52H。
4. concentrate on
全神貫注；集中（心思）；
eg. Water companies should concentrate on reducing waste instead of building new reservoirs.
自來水公司應該集中精力減少水浪費，而不是修建新水庫bpyVLXB)puPCCIO]yZr。
eg. We must concentrate on what we are doing.
我們必須專心作眼下的事H)o.qPIuR6l@uUD。