To find out how many times something happend or someone did something, you should use the question form èèmélòó, as in:
Èèmelòó ni Dúpé jeun lánàá? How many times did Dupe eat yesterday?
- Dúpé jeun léèmerin lánàá Dupe ate four times yesterday
Èèmelòó ni Ògbéni Mákindé lo sí ìlú Lóndònù? How many times did Mr. Makinde go to London?
- N kò mo oye ìgbà tí Ògbéni Mákindé lo sí ìlú Lóndònù I do not know how many times Mr. Makinde went to London.
Notice that while èèmelòó is used in a question, oye ìgbà tí is used in a statement, and both mean the same thing. You should never use èèmelòó in a statement. This phenomenon is very common in question forms in Yoruba.
Some other examples are:
Èèmelòó ni o sáré lánàá? How many times did you run yesterday?
- Mo sáré lééméta lánàá I ran three times yesterday
- N kò mo oye ìgbà tí mo sáré lánàá I don’t know how many times I ran yesterday.