Recommend yourself
3. Comparative demonstration
4. No, the tone is too absolute after removal, and underlining makes the argument more rigorous and measured.
5. Example 1: Front: Maxima, be your own Bole; On the contrary: there is bole in the world, and there is a swift horse.
? Example 2: positive: if you discover and appreciate yourself, you can become a swift horse; On the contrary: you have to find Bole to be a swift horse.
(There is no unified answer, only the right meaning)