重点讲解：
1. think highly of 极为（赞许）；（评价）高的；
The boss seems to think highly of you.
上司似乎很器重你。
2. back-and-forth 来回；
When you're asking a question, anticipate any missing details that could cause an extended back-and-forth.
当你在问问题时，预先考虑到所有可能遗漏的细节，以免造成长期的反反复复。
3. be based on 以…为基础；
The play was based on Irish legend.
这部戏取材于爱尔兰传说。
4. as well 也；还；
We should stick to the principles and be flexible as well.
既要有原则性，也要有灵活性她会打篮球，也会打网球。