1. Their smile was like a sunrise( simile or metaphor)
2. I feel like a million-dollar( simile or metaphor)
3. today is a trainwreck( simile or metaphor)
4. the rain fell like a bucket(simile or metaphor)
If it uses the words like or as, it is a simile. This means that 1 2 and 4 are similes. 3 does not use like or as and says one thing literally is another thing so it is a metaphor.
