1.look forward to 期待
We look forward to strengthening still further our already close co-operation with the police service
我们期盼着进一步加强和警方的合作，形成更加紧密的合作关系。
2.be able to 能够
If you need help at work, your Personnel Manager should be able to help.
如果你工作中需要帮助，人事经理应该能帮上忙。
3.have trouble doing 有困难
Left-handers have trouble using can-openers, scissors, and potato peelers.
左撇子在使用开罐刀、剪刀和土豆削皮器时会有困难。
4.second grade 二年级
The parents want their child to skip to the second grade.
这家父母希望他们孩子能跳级到二年级。
5.keep up 维持
I was so hungry all the time that I could not keep the diet up for longer than a month
我无时无刻都觉得饿，节食坚持不到一个月就放弃了。
