adj. 乐观的，乐观主义的；
用作定语
～+ n.
He is an optimistic person.
他是位乐观主义者。
He is an optimistic young fellow.
他是位乐观的年轻人。
用作表语
S+be+～+ prep .-phrase
She is not optimistic about the future.
她对未来并不乐观。
S+be+～+that-clause
The experts are optimistic that we will succeed.
那些专家对我们的成功抱乐观态度。
1. Before his first round of discussions, Mr Baker sounded an optimistic note.
第一轮讨论前，贝克先生听上去还比较乐观。
2. They are not optimistic about a settlement of the eleven year conflict.
他们不是很有信心能和平解决这场长达11年的纷争。
3. Michael was in a jovial and optimistic mood.
迈克尔情绪愉快乐观。
4. The timetable was hopelessly optimistic.
时间表制定得过于乐观。
5. He is known for his optimistic can-do attitude.
他因乐观敢闯而闻名。
6. She felt light-hearted and optimistic.
她感到无忧无虑，很乐观。