1. A good leader inspires and fills his team with the positive energy, and he leads them to success.2. The President just delivered a nice, motivational speech. The entire country has been inspired by his speech.3. You son just lost the game and is in a bad mood. You should go give him a pep talk and cheer him up.
 inspire fill somebody with the positive energy motivational pep talkinspire = 鼓勵或啟發fill with the positive energy = 充滿正面能量a motivational speech 就是激勵人心的演說或激勵的致詞。pep talk 也很貼切，可用在任何鼓勵的一番話
I have been wrecking y brain on this tough math question but I still cannot solve it.