?意思：great expectations是指對未來的強烈期望和希望，通常是指對自己或他人的成功、幸福等方面的期待。

用法：作為一個名詞短語，great expectations通常用來形容人們對未來的美好展望。它可以用于正式和非正式場合，也可以用于口語和書面表達。此外，它也可以作為小說、電影等藝術作品的。

例句：

1. She had great expectations for her children's future.

她對孩子們的未來抱有很大的期望。

2. The company's great expectations for the new product were not met.

公司對新產品的巨大期望沒有實現。

3. He lived his life with great expectations and never gave up on his dreams.

他一生都懷揣著巨大的期望，從不放棄自己的夢想。

4. The movie "Great Expectations" is based on the novel by Charles Dickens.

電影《遠大前程》改編自查爾斯狄更斯的小說。

5. Despite the great expectations placed on her, she remained humble and hardworking.

盡管人們對她抱有很高的期望，她仍然保持謙遜和勤奮。

同義詞及用法：great hopes, high aspirations, big dreams, lofty goals等都可以替換great expectations來表達類似意思。：She had great hopes for her future. (她對未來抱有很大的希望。)