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.,

MODAL VERBS

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？