Both sentences say the same thing. To be seduced by someone means you were seduced: sarah was seduced by a friend= Sarah's friend seduced her. It helps to understand the word seduction, because in the second sentence its placement is odd and "her seduction" means the seduction happened to her, it is her experience. And the "by a friend" says who did it to "her".

yes, it is polite. The owner of the home knows there is an odor and is concerned you may find it offensive. They say, "don't mind the smell," or even "sorry about the smell," and often tell you what it is, "we just painted," "the baby just got changed," "my son forgot to take out the trash," etc. They are trying to be considerate.

Not bad at all. other phrasing could be "your complete knowledge of brain function is evident in this one tweet" or "everything you know about how the brain functions was said in that one tweet" Assuming you were implying they know little to nothing about brain function.

Not bad at all. other phrasing could be "your complete knowledge of brain function is evident in this one tweet" or "everything you know about how the brain functions was said in that one tweet" Assuming you were implying they know little to nothing about brain function.

yes, it is polite. The owner of the home knows there is an odor and is concerned you may find it offensive. They say, "don't mind the smell," or even "sorry about the smell," and often tell you what it is, "we just painted," "the baby just got changed," "my son forgot to take out the trash," etc. They are trying to be considerate.

Your question is perfect! You could also ask "How do I get to the supermarket?" One is not better than the other, but the first question, someone might just answer "Fourth Street." Although we do have a natural tendancy to ask further clarification like if you know where that is or to tell you the major things it is neat. But if you really just want to know how to get to the supermarket, the second question gets right to the point. "And where can I ask..." You would say, "how can I ask..." or "How do I say..." "Where are the vegetables?" Is also perfect, and so is the second question like it. Although, we typically call it the "produce" section. Not that anyone would be confused if you just asked for vegetables, but because fruit and vegetables are in the same place, they call it produce.