This is a study sheet with pointers on how to say in Japanese "have already ..." and "have not yet ..." using "mo" and "mada" with the appropriate verb conjugations. Used in the Wells College Japanese Language Program. Covers Ch 9 Grammar 3 in the Genki I textbook. Copyright by Kurt Pipa.

1.
Wells College Japanese Program まだ〜ていません Genki Ch 9 Grammar 3
Spring 2015 Study Sheet
Basics
Questions Affirmative answers Negative answers
● もう​ (​yet​) is optional; まだ is not used.
● Simple past tense is used; no form of ている
is used.
（もう）洗濯​（せんたく）​をしましたか。
Did you do the laundry (yet)?
● もう​ (​already​) is used;
it is optional here as well.
● Simple past tense is used.
はい、（もう）しました。
Yes, I (already) did [the laundry].
● まだ​ is used. This is not optional.
● 〜ていない​ form is used. The ​simple ​past
cannot be used here; you ​must ​use the
form of ​negative ~teiru​.
いいえ、まだしていません。
No, I haven’t done [the laundry] yet.
Examples
Affirmative
A. もう お風呂​（ふろ）​に はいりましましたか。
B. はい、はいりましました。
Negative
A. 夕飯​（ゆうはん）​を 食べましましたか。
B. まだ 食べていません。
Copyright © Kurt Pipa
Lecturer in Japanese, Wells College, Aurora, NY