have to
01
必须, 不得不
used to indicate an obligation or to emphasize the necessity of something happening
Transitive
语法信息
形态构成
短语
状态动词
规则
不可分离
小品词
to
基本动词
have
现在时
have to
第三人称单数
has to
现在分词
having to
一般过去时
had to
过去分词
had to
例子
We have to pay our bills before the due date to avoid late fees.
我们必须在到期日之前支付账单以避免滞纳金。
02
必须, 一定
to be certain about something happening or being true in a given situation
例子
It has to be a mistake; I never received that email.
这一定是个错误；我从未收到过那封邮件。
