中译英，英语较好的进

If the sunshine gets away from me, my heart will get into darkness again.

My heart will sink into darkness again if I lose the sunshine.

2楼翻译得很好,但will后面要用动词原形.

My heart will sunk into darkness again without sunshine.

My heart will become dark again,when the sun is far away from me

My heart will become dark again,if I kiss the sun good-bye.
kiss goog-bye 就是失去。

if my sunshine is gone, my heart will be covered again.

不知道行不行