0
votes
0answers
27 views

Only 〜ます in ending verb vs. 〜ませんでした [duplicate]

As I understand, 〜ます should only be used in the ending verb while others inside the sentence should be in basic form. How come, then, that the polite past negative tense is made using 〜ませんでした, which ...
17
votes
2answers
869 views

ありがとうございます vs. ありがとうございました

When thanking someone, what is the rule for using ありがとうございます vs. ありがとうございました? My sensei taught us to use ありがとうございました when the action you're thanking someone for occurred in the past, but I've heard ...