1- Im in the mood to dance! ( feel like)
I FEEL LIKE dancing. / I FEEL LIKE I want to dance.
2-Don't eat more ice cream. ( had better)
You HAD BETTER not eat more ice cream.
3-I was two years old when I began to swin. (since)
I began to swim SINCE I was two years old.
4-We arrived ten minutes after the lecturer had begun speaking. ( for)
The lecturer had been speaking FOR ten minutes when we arrived.
5-This is my first skiing lesson. ( never)
I've NEVER skied before.