They have started charging for plastic shopping bags.
"They have started charging"＝「彼らは有料化し始めた」
"for plastic shopping bags"＝「レジ用のプラスチックバッグを」
Sentence in context:
"These shopping plastic bags are no longer free of charge. They cost 3 yen per bag. If you would like a bigger one, they cost 5 yen per bag."
I always carry my shopping bag, as plastic bags are not free anymore.
You have to pay for plastic bags now.
1)’レジ袋が有料化されたのでいつもショッピングバッグを持ち歩いています‘
not free 無料ではない
anymore もう、もはや
plastic bag スーパーでもらうビニールの袋
carry 持ち歩く
shopping bag エコバッグ
2)’レジ袋は今有料です‘
have to pay 支払わなければならない
アメリカ合衆国 
日本 
