1.be useful to 对…有用
2.be well up in 精通，熟悉
3.be wild with jay 欣喜
4.be willing to (do) 乐意…
5.be worried about 为…而担心
6.be worse off 处境较坏，情况恶化
7.be tired out 疲倦极了
8.be true to 适用于
9.be unconscious of 不知道…
10.be unequal to 无法胜任…的
11.be unfit for 不适合，不胜任
12.be worth (doing) 值得(做)
13.be wrong with 有点毛病，有些不舒服