<em>An introduction has to capture the reader's interest</em> so that he continues reading the piece. It should be written in an easy, understandable style and it should be kept relatively short.
All strong introductions have three components: a hook, a transition sentence and a theses statement.
The hook is the place where you grab the reader's attention. It may be a controversial question, a bold fact or just a hypothesis. The transition tells how the hook relates to the topic of the text and then the introduction ends with a theses statement.
It means he was happy and felt good in his heart. You know when you see or do something like buy your mom a gift she loves and your heart seems to feel like it is filled with happiness? That's the feeling that I believe William Wordsworth is trying to express.
