我怀疑他忘了这件事。
I suspect he forgot about it.
to doubt (sth); to be skeptical of; to have one's doubts; to harbor suspicions; to suspect that
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
我怀疑他忘了这件事。
I suspect he forgot about it.
他没有怀疑我。
He did not doubt me.