HAD BETTER - To give strong advice (with negative consequences)., MUST/HAVE TO/HAS TO - To express obligation., MUSTN´T - To express prohibition., DON´T/DOESN´T HAVE TO - To express lack of necessity., SHOULD/OUGHT TO - To give advice.,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?