Mi miras kia persono li estas. I wonder what sort of a person he is.
Kia vetero estas? What sort of weather is it?
Kia plezuro! What a pleasure!


THE IMPERFECT TENSE.

113. The compound tense formed by using the present active participle
with the past tense of "esti" represents an act or condition as in
progress in past time, but not perfected, and is called the "imperfect
tense". The conjugation of "vidi" in this tense is as follows:

mi estis vidanta. I was seeing.
vi estis vidanta. you were seeing.
li (sxi, gxi) estis vidanta. he (she, it) was seeing.
ni estis vidantaj. we were seeing.
vi estis vidantaj. you were seeing.
ili estis vidantaj. they were seeing.


THE PROGRESSIVE FUTURE TENSE.

114. The compound tense formed by using the present active participle
with the future tense of "esti" represents an act or condition as in
progress--or a condition as existing continuously--at a future time, and
is called the "progressive future" tense. The conjugation of "vidi" in
this tense is as follows:

mi estos vidanta. I shall be seeing.
vi estos vidanta. you will be seeing.