十一、“but”与“however / whereas”

butHe is rich but not happy.
howeverShe studied hard. However, she still didn't get a good grade.
whereasSome people like to stay at home, whereas others prefer to go out.
十二、“if”与“provided that”

ifIf it rains tomorrow, we will stay at home.
provided thatProvided that you study hard, you will pass the exam.
十三、“make”与“enable”

makeThe good news made her happy.
enableThe new technology enables us to communicate more easily.
十四、“show”与“demonstrate / indicate”

showHis actions show his honesty.
demonstrateThe experiment demonstrates the truth of the theory.
indicateThe signs indicate that the economy is improving.
十五、“remember”与“bear in mind that… / bear/keep sb./sth. in mind”

rememberRemember to turn off the lights before you leave.
bear in mind that…Bear in mind that honesty is the best policy.
bear/keep sb./sth. in mindKeep this advice in mind.