重点讲解：
1. up and down
上上下下；来来回回；
eg. There's a lot of rushing up and down the gangways.
舷梯上许多人上上下下#gf[;hgThoY)pPkg1RA5。
eg. He continued to jump up and down like a boy at a football match.
他不停地上蹿下跳，活像个足球赛中的男孩csvc=+ohzo1。
2. be able to do sth.
可以…的，能够做某事；
eg. Despite our disagreements, we have been able to find some common ground.
尽管我们存在分歧，但仍能找到一些共同点D[NV8n_w3!VR3_SUs。
eg. Women seem to be able to multitask better than men.
女性似乎比男性更擅长同时做数件事情
3. be going to do sth.
将要，即将；
eg. I think it's going to be successful.
我认为这事会成功&F6iR1b=hLkihX0^z。
eg. I'm going to have to tell him the truth.
我得把真相告诉他9sMaao@dgB*I。