MUST - ....is used to express a STRONG obligation or necessity. It often shows us that the obligation comes from the speaker., HAVE TO - ....is used to express obligation or necessity. It shows that the obligation comes from outside the speaker., MUST NOT - We use .... to say that something is not permitted or allowed. (things that are forbidden)., DON'T HAVE TO - We use .....to show that there is NO obligation. You can do something if you want to but it's NOT compulsory.,

modal verbs obligation

สั่งพิมพ์
ฝัง

ลีดเดอร์บอร์ด

สไตล์ภาพ

ตัวเลือก

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