如题所述
首先我们来看下be sure to do sth和be sure of doing sth的大致意思:
be sure to do sth:词性为短语,be: 动词,表示状态或身份;sure: 形容词,意为“确信的”;to: 介词,表示目的;do: 动词,意为“做”。
be sure of doing sth:词性为短语,be: 动词,表示状态或身份;sure: 形容词,意为“确信的”;of: 介词,表示关系;doing: 动词的现在分词形式,意为“做”。
通过下面的表格我们了解下be sure to do sth和be sure of doing sth的含义、发音和用法
接下来让我们看下be sure to do sth和be sure of doing sth的用法区别:
1.语法结构:be sure to do sth 是一个完整的短语,必须以 be 开头,接主语,然后是 sure to do 这样的形式,再接具体的动词。而 be sure of doing sth 是一个完整的短语,be 后面直接接 sure of doing 这样的形式,再接具体的动词。
例子:
- I am sure to attend the party.
(我确定要去参加聚会)
- He is sure of having completed the task.
(他确信已经完成了任务)
2.语义含义:be sure to do sth 强调对将要发生的事情的确定性和必要性,含有一种责任感和建议的意味。be sure of doing sth 则强调对已经发生或将要发生的事情的确信和信心,含有一种自信和肯定的态度。
例子:
- You are sure to submit your homework on time.
(你一定要按时交作业)
- I am sure of my decision.
(我对自己的决定非常有信心)
3.动作执行:be sure to do sth 强调执行特定的动作或任务,表示必须做某事。be sure of doing sth 则强调对某个动作或状态的确认,表示对某事的把握。
例子:
- Be sure to turn off the lights.
(记得关灯)
- She is sure of her success.
(她确信自己会成功)
4.语气:be sure to do sth 表示说话人的建议、要求或命令,语气更加强烈。be sure of doing sth 则表示说话人的个人观点、判断或感觉,语气较为客观。
例子:
- Please be sure to arrive on time.
(请务必按时到达)
- I am sure of her being right.
(我确信她是对的)