What island group are known to have just one verb tense in their language?
Correct answer: Trobriand Islands

GIN ADOBO
explain further about the verb tense

Tom
Mandarin might be similar.
A time word is used with the verb, but the verb doesn't charge.
E/ Tomorrow I will go =
M/ Tomorrow I go.
E/ Yesterday I went =
M/ Yesterday I go.
"go" is always the same.
For all their verbs.