1. What I have learned from the past jobs is the ability to promote products.
我從以往的工作中學到了推銷產品的能力。
還能這樣說：
I have obtained the ability to promote the products from the past jobs.
I have learned how to promote the products from the past jobs.
應用解析：
a man of ability 有本事的人；
ability in music 音樂天才

2. It has inspired me to develop my ability of personnel management.
這激發了我進行人事管理的能力。
還能這樣說：
It has excited my ability to personnel management.
It has aroused the ability to manage the personnel affairs.
諺語：
A cat has nine lives.
吉人天相。

3. I'm very familiar with this market.
我對這個市場非常熟悉。
還能這樣說：
I have a good knowledge of this market.
I know about this market very well.
應用解析：
bill market 匯兌市場；
black market 黑市

4. I have realized teamwork is the key to success.
我明白了只有發揮團隊的力量才是成功的關鍵。
還能這樣說：
I get to know that teamwork can make us succeed.
I know that only we are united to work can we be successful.
諺語：
Cheek bring success.
和氣生財。