?deeply的意思是非常，極其，深深地。它是一個副詞，用來描述強烈的程度或感情。在句子中通常放在動詞后面，表示動作或狀態的程度。

用法:

1. 修飾動詞：She is deeply in love with him. (她深深地愛著他。)

2. 修飾形容詞：I am deeply grateful for your help. (我非常感激你的幫助。)

3. 修飾副詞：He is deeply and passionately in love with her. (他對她深深地、熱烈地愛著。)

例句1-5句且中英對照:

1. I was deeply touched by his words. (他的話讓我深受感動。)

2. She was deeply moved by the beautiful scenery. (她被美麗的風景深深打動了。)

3. The news of his death affected me deeply. (他去世的消息讓我非常難過。)

4. He is deeply committed to his work and rarely takes a day off. (他對工作非常投入，很少休息一天。)

5. She is deeply devoted to her family and always puts their needs before her own.(她對家人非常忠誠，總是把家人的需求放在自己之前。)

同義詞及用法:

1. Intensely: 強烈地，極其地。與deeply的用法相似，但更強調程度。

例句：She was intensely curious about his past. (她對他的過去充滿了強烈的好奇心。)

2. Profoundly: 深深地，深刻地。與deeply的用法相似，但更強調對某事物的理解或影響。

例句：The book profoundly changed my perspective on life. (這本書深刻地改變了我對生活的看法。)

3. Extremely: 極其，非常。與deeply的用法類似，但更多用于形容詞前面。

例句：The food was extremely spicy. (這食物非常辣。)

4. Passionately: 熱情地，激情地。與deeply的用法類似，但更多指感情或態度。

例句：He passionately defended his beliefs. (他激情地捍衛自己的信仰。)

5. Sincerely: 真誠地，衷心地。與deeply的用法類似，但更多指感情或態度。

例句：I sincerely apologize for my mistake. (我衷心道歉我的錯誤。)

總結:

Deeply是一個常用且有力量詞匯，在表達強烈感情或程度時非常有效。它可以修飾動詞、形容詞和副詞，與其同義詞相比，更多用于強調程度和感情。在寫作中，可以靈活運用deeply來增強句子的表達力。