重點講解：
1. a couple of 兩個；幾個；
例句：The bowler let go a couple of scorchers.
投球手投出了幾個快球Ar1AeVBGR26t#RR,Y#).。
2. all of a sudden 突然地；出乎意料地；
例句：The idea came to my mind all of a sudden.
這個想法突然之間冒了出來=wqTkB)CK%__^。
3. every now and then 時而；有時；
例句：She called me every now and then to sing the blues about her troubles.
她時常打電話給我對她反遇到的麻煩發(fā)牢騷7G%Me&RHPofN4。
4. for the most part 大部分；多半；通常；
例句：These small parcels of land were purchased for the most part by local people.
這些小塊土地大多數(shù)是當?shù)厝速I下的D4rzzR9T9,cT#6MOxSbi。