必买用英语怎么说

I must buy a book.

I must certainly buy that vehicle .

I *got* (have) to buy that car!got重音其实must口语里面一般不用的口语用的基本上都是got, have等 must 太formal了不要小看这些平常的词， 大多数东西在生活中表达的效果要比文绉绉的词的感觉要强烈多了的...那个have如果语气更重可以加吧虽然似乎语法说不通， 但是语气肯定够强烈， 口语里好多都这样的印象中还见过什么， I don't like none at all 多重否定等等个人意见

i have to buy a book.

i have to buy a book.

You must buy it when you go into the store

I will buy that car definitely.//I want to buy that car definitely

I must buy a book或者I have to buy a book.