19. Two is company but three is none.
【正确理解】两人成伴，三人不欢。
20. Students are still arriving.
【正确理解】学生还没有到齐。
21. They went away as wise as they came.
【正确理解】他们一无所获。
22. I won't do it to save my life.
【正确理解】我死也不会做。
23. I don't think his painting is any better than yours.
【正确理解】我认为他的画比你好不到哪去。
24. You don't want to do that.
【正确理解】你不应该去做。
25. Rubber easily gives way to pressure.