王尹的回答：不知不觉天又慢慢变黑. Unconsciously the sky gradually getting dark again. 童军杰的回答：不知不觉天又慢慢变黑. Unconsciously the sky gradually getting dark again. 阳光飞扬的回答：is是be动词，dark是形容词，两者不可以一起的哦，如果表示天慢慢黑了可以在is后加上个turning，就行了，时态的话如果不是特指过去直接就用一般进行就好 卓云飞的回答：The day reached black slowly by insensible. 魏邦良的回答：The sky is slowly getting dark unconsciously again. |
