重點講解：
1. up and down
上上下下；來來回回；
eg. There's a lot of rushing up and down the gangways.
舷梯上許多人上上下下sDmvT2zxXE(。
eg. He continued to jump up and down like a boy at a football match.
他不停地上躥下跳，活像個足球賽中的男孩kUHyCjJUx;s6~cWJ]%R。
2. be able to do sth.
可以…的，能夠做某事；
eg. Despite our disagreements, we have been able to find some common ground.
盡管我們存在分歧，但仍能找到一些共同點o+P,=5vSIjF@。
eg. Women seem to be able to multitask better than men.
女性似乎比男性更擅長同時做數(shù)件事情
3. be going to do sth.
將要，即將；
eg. I think it's going to be successful.
我認為這事會成功3gxl~8TYAZFMB5DmWXKP。
eg. I'm going to have to tell him the truth.
我得把真相告訴他ILx-k|eZZ9@|G。