Here are some examples of sad sentences in English:

1、The memories of our past, like a broken photo, are scattered and cannot be put together.

2、The raindrops fall on my heart, leaving only a trace of sadness.

3、I wish I could forget you, but your name is always on my lips.

4、The wind carries the scent of your perfume, but not the warmth of your embrace.

5、My heart is broken, like a butterfly caught in a rainstorm.

6、Sometimes the silence is more painful than the words that break you.

7、My tears are like raindrops, falling and leaving behind a world of pain.

8、Love left me like a bird without wings, fluttering and falling to the ground.

9、In the rain, my tears are my only companions, walking with me through the sadness.

10、The pain of losing you is like a knife in my heart, cutting me to the core.

Each of these sentences expresses a different kind of sadness and pain, ranging from the loss of memories to the pain of heartbreak and the loneliness of being alone in the rain.