A complex sentence has one dependent clause and one independent clause.
Here's some examples;
1. After twenty years, he still had feelings for her.
2. Because my coffee was too cold, I heated it in the microwave.
It’s like acting without thinking or acting in a horrible
B, he is showing he knows he's getting better becoming more hopeful
Jane grows into a young woman during her time at Lowood.
Helen proves herself to be a true friend and provides support to Jane while Jane is being unfairly punished. Her death was tragic for Jane and we know that Jane never forgets her, as she eventually puts a stone over Helen's grave.
Miss Temple is a model of a fair and sympathetic teacher. She also sticks up for Jane and eventually helps her become a teacher. When Miss Temple leaves the school after getting married, Jane decides to leave as well. This takes her to Thornfield.
Helen and Miss Temple are key figures in Jane's development as a young woman.