■ decide这个动词（瞬时体，第四类）的搭配用法比较复杂。 1) 单独使用，没有补语，“做出决定”、“下决断”。 - —Where are you going on holiday this year?—I don't know. I can't decide. —你今年假期到哪里去度假？—不知道。我决定不了。
2) 后面跟 to inf.，表示“决定做某事”。 - I've decided to learn karate.我决定了要学空手道。
- What made you decide to get married?是什么使得你下决心结婚的？
3) 后面跟着间接疑问句，表示“对某问题作出怎么办的决定”。 - He has a month to decide whether he's going to stay.他有一个月的时间来决定是否留下。
- I can't decide which I prefer.我更喜欢哪一个，决定不下来。
- You must decide what to do/ when to act/ where to go.你必须决定干什么／何时动手／到何处去。
4) 后面跟着 that 从句，“作出判断，认为…”。 - She decided that the children should stay at home.她决定孩子们应该留在家里。
- He decided that the doorbell was broken.他断定门铃是坏了。
- In the end she decided that he was right.终于她确定是他对了。
这个 that 可以省略。 - He decided she was praying.他判定她是在祷告。
5) 主语是人，直接宾语是内容或方向尚未确定的事物，“决定某事物的内容或方向应该如何”。 - The Court did not decide any of the core legal questions, but ordered a lower court to decide the case on a wider range of First Amendment issues, but ordered a lower court to decide the case on a wider range of First Amendment issues.最高法院并不对任何核心的法律问题作出决定，而是命令一个下级法院就范围更广的有关宪法第一修正案的问题作出判决。
6) 主语是事物，直接宾语是人，“（该事物）使得（某人）决定去做某事”，这个“做某事”用 to inf. 表示。 - It was this which finally decided me to come to India.正是这一点，最后使得我决定前来印度。
也可以没有 to inf.。 - What finally decided me was the price.使我最后下决心的，是价格。
7) 主语是事物，直接宾语是个间接问句（可以以一般现在时代表将来发生的事），“决定（答案）”。 - It will decide who wins the election.这将决定谁胜选。
8) 主语与直接宾语都是事物，“（某事）决定（另一事的内容或结果）”或“（某事）决定（某结果的产生）”。 - Charlton's goal decided the match.查尔顿进的一球，决定了比赛的胜负。
- Their advice decided his success.他们提的意见，决定了他的成功。
9) 主语是人，decide 后面加上 on/upon something，表示“决定采取”。 - Bush has not decided on a course of action.布什还没有决定采取某一方针。
- He decided on a career in the army.他决定从军为业。
- They decided upon adjourning the session.他们决定休会。
10) 主语是人，decide 后面加上 on something 或 about something，“（就某问题）作出决定”。 - They finally decided on the date of departure.他们最后决定了出发日期。
- We still have to decide about a date for the meeting.我们还得定下开会的日期。
- His successor needs to be decided on.他的接班人是谁，需要定下来。
11) 主语是人，decide 后面有不同的介词短语（或状语），说明所作决定的不同方向。 - It's hard to decide between the two.两者之间很难作出选择。
- We decided in favor of the cheaper one.我们决定要那个便宜的。
- They decided against punishing him.他们决定不惩罚他。
- But the boss decided otherwise.但是老板却作出了另一种决断。
12) 被动语气，主语是问题或决定内容。 - It has not yet been definitely decided.事情还没有最后决定。
- It was decided to alter our strategy.决定了要改变我们的战略。
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