在中文怎么说：to give a presentation? I mean normally when you present to a group of people using slides...谢谢！

Some issues when I translate also with “也“ How to translate this? A: Do you like tea? B: Yes, and you? A: I like tea as well, but I also like coffee. A: 你喜欢茶吗？ B: 我喜欢。 你呢？ A: 我也喜欢，但是我也喜欢咖啡。 Is that correct? Should A use 也 both to express that he also likes tea (like his friend), and to express that he also likes coffee (besides tea)? Thanks

“觉得”和“认为”有什么不一样？

“记得”和“记住”有什么不一样？

Relative adverb 在中文怎么说：That's the restaurant where we met for the first time 那个where是我的困难。。。

How to say "I have to"? From what I know: 必须 ＝must 应该 ＝should 需要 = need But how do you translate "have to" in Chinese, to express that you are not willing to, but you must do something. For instance, "I would like to stay, but I really have to go now because my cousin is waiting for me".

在中文怎么说"I didn't know"？ “原来我不知道了” 对吗？ 也可以说“我没知道”？我没听过。。。但是对不对？

Unclear use of 了 What is the difference between: 我学汉语学了三个月了 and 我学汉语学了三个月? Thanks!!

跟, 和 and 给。。。 What is the difference between 我跟他说, 我和他说 and 我给他说？ And can 我给他说 also mean 我替他说?