Here’s the analysis of the underlined words in each sentence:

1. **Sam look so happy**
- **Sam**: Subject (S)
- **look**: Verb (V)
- **so happy**: Adverbial (Adv)

2. **My brother doesn’t eat properly**
- **My brother**: Subject (S)
- **eat**: Verb (V)
- **properly**: Adverb (Adv)

3. **He practises tennis everyday**
- **He**: Subject (S)
- **practises**: Verb (V)
- **tennis**: Object (O)
- **everyday**: Adverb (Adv)

4. **Sleeping is necessary for overall health**
- **Sleeping**: Subject (S)
- **is**: Verb (V)
- **necessary**: Complement (C)
- **for overall health**: Adverbial phrase (Adv)

5. **I don’t eat meat for some seasons**
- **I**: Subject (S)
- **don’t eat**: Verb (V)
- **meat**: Object (O)
- **for some seasons**: Adverbial phrase (Adv)

Let me know if you need further explanation on any of these!