Lesson Summary: The Grammar of "Discovery"

To use 〜と、〜た or 〜たら、〜た correctly, you need to remember one golden rule:

The second half of the sentence must be a DISCOVERY, not an action.

The Formula:

[ Action ] と / たら 、 [ Sudden Discovery (Past Tense/〜た) ]

〜と sounds slightly more literary, 〜たら sounds slightly more casual — but both work!

Many students accidentally use this grammar to describe their own planned actions.

×Incorrect (Action):

冷蔵庫を開けると、ケーキを食べた。

(When I opened the fridge, I ate the cake.)

→ Eating the cake is your own intentional action, not a sudden discovery.

◎Correct (Discovery):

冷蔵庫を開けると、ケーキがあった。

(When I opened the fridge, there was a cake.)

→ You suddenly noticed the cake was there. It's a discovery!

If you want to say "When I did A, I suddenly noticed B", this is the perfect grammar to use.

Make sure the sentence ends in the past tense (〜た) because you just realized it!

＜ちか先生から宿題(しゅくだい)｜Homework from Chika sensei＞

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Complete the sentence, write it in the comment box.

れいぞうこを開けると、 ＿＿＿＿＿＿＿＿＿。

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