YOU SAID:
why don't we go to the supermarket to buy some cereals?
INTO JAPANESE
シリアルを買いにスーパーに行きませんか。
BACK INTO ENGLISH
Would you like to go to the supermarket to buy cereal?
INTO JAPANESE
あなたはシリアルを買うためにスーパーマーケットに行きませんか。
BACK INTO ENGLISH
Would you like to go to the supermarket to buy cereal?
Come on, you can do better than that.