When you say "I watched her dance" it has the feel that the event happened farther in the past. When you say "I watched her dancing" it is more like the imperfect past because it was happening for a while before you stopped watching or that the event is in the more recent past. I hope that makes sense.

Second Day

Why do I want to learn English?
I want to learn english because:
- I need to talk, to write e-mails and to read scientist's papers;
- I want to watch films in English and understand what people say without subtitles;
- I want to read books in English without having to translate to Portuguese;
- I want to speak English fluently, like a native;
- I want to communicate with people all over the world;
- I want to teach English to people that don´t have conditions to pay an English School.

Can you help me to achieve this goals?

mit possibly... She speaks more fluent german with (Mit) the more speech exercises she does.