第一，迷你对话

A: I'm all at sea in Professor Black's lectures.

听Black教授的演讲，我脑海里一片迷茫。

B: Are you? I like his lectures.

是吗？我喜欢他的讲课。

A: Can you give me some suggestions?

能给我提些建议吗？

B: Be prepared for his lectures and then you'll feel better.

上课前做好准备，那样你会感觉好些。

第二，地道表达

at sea

1. 解词释义

At sea的意思是“茫然，迷惑不解”。其英文解释为：puzzled, perplexed, or completely confused (about a subject or some task at hand)。

2. 拓展范例

E.g. She tried to understand the instructions, but she was completely at sea.

她费尽力气想看懂那些说明文字,却全然不知所云。

E.g. When it comes to higher math, John is totally at sea.

说到高深点的数学，John完全不懂。

E.g. I tried to do well in this class, but I've been at sea since we started.

我尽力在这堂课上认真学习，但是从课堂一开始，我就不知所云。

第三，好词妙语

give sb. some suggestions：给某人一些建议

E.g. I tried to give him some suggestions, but he brushed all my suggestions to one side.

我试着给他提点建议，但他对我所有意见都置之不理。

E.g. Could you give me some suggestions on where I should go to find some good information?

你能给我建议一下我该到哪儿找些有用的资料吗？

be prepared for：为......做好准备

E.g. You must be prepared for disillusionment.

你一定要做好失望的准备。

E.g. He was inadequately prepared for the impending examinations.

他对即将举行的考试准备不足。