形容詞 timely:

1. before a time limit expires
2. done or happening at the appropriate or proper time
   同義詞：seasonable, well-timed, well timed

副詞 timely:

1. at an opportune time
   同義詞：seasonably, well-timed, apropos

1. Be timely and exact.
   要做到又及時又準確。
2. I do appreciate your timely help.
   我的確很感謝您的及時幫助。
3. Had it not been for your timely help, our company would have been on the verge of bankruptcy.
   若非你及時伸出援助之手，本公司將會瀕臨破產的邊緣。
4. What we expected is nothing less than a timely payment.
   及時付款正是我們所盼望的。
5. It means to give the most-needed and timely aid.
   它的意思是給予最需要的及時的幫助。
6. Nothing more. I do appreciate your timely help.
   沒什么了。非常感激您及時的幫助。
7. This has been a timely reminder of the need for constant care.
   這件事適時地提醒我們要注意時時謹慎。
8. Thanks to your timely intervention.
   多虧你及時調停。