Hi, i’d like to report that the first phrase “i must eat chocolate” is equal to the second “i must not eat chocolate”. Both are using ~nai and ~masen, so i think the first is wrong.
Seeya.
Sorry bothering again, but i think there might have a problem with phrases 3 and 4 too.
Sorry if i’m wrong.
[I must eat chocolate ]
私 は チョコレート を 食べなくてはいけない 。
私 は チョコレート を 食べ なくてはいけません 。
[I must not eat chocolate ]
私 は チョコレートを食べて は いけない 。
私 は チョコレートを食べて は いけません 。
At [I must eat chocolate] – “食べなくて…” (tabenakute)
At [I must not eat chocolate ] – “食べて…” (tabete)
「～なくてはいけない」「～なくてはならない」＝ “must do”
「いけない」= “must not do”
Yes, this is very confusing…