Linking words
We haven’t seen him. We haven’t heard from him for over a year. (neither … nor)
We have neither seen him nor heard from him for over a year.
He tried to play until the end of the match. He had injured his knee. (although)
Although he had injured his knee, he tried to play until the end of the match.
He wrote an essay yesterday. He read a book too. (not only …but … also)
Not only did he write an essay yesterday, but he also read a book.