I saw a film yesterday evening.( 改成否定句)I____ ____ a film yesterday evening.

I saw a film yesterday evening.( 改成否定句)I____ ____ a film yesterday evening.
I saw a film yesterday evening.( 改成否定句)
I____ ____ a film yesterday evening.

I saw a film yesterday evening.( 改成否定句)I____ ____ a film yesterday evening.
didn't see.时态为过去时,所以借助动词did,否定didn't.然后动词还原动词原形.

i didn't see a film yesterday evening

didn't see