had

1.

2. （had 有时代替 if 用于从句句首，表示某种情况可能发生但并未发生）
Had is sometimes used instead of 'if' to begin a clause which refers to a situation that might have happened but did not. For example, the clause 'had he been elected' means the same as 'if he had been elected'.

e.g. Had he succeeded, he would have acquired a monopoly...
要是他当时成功了，他就会取得垄断地位。
e.g. Had I known what the problem was, we could have addressed it.
如果我当时知道问题出在哪里，我们就可以设法解决了。

3. 上当受骗
If you have been had, someone has tricked you, for example by selling you something at too high a price.

e.g. If your customer thinks he's been had, you have to make him happy.
要是顾客感觉自己当了冤大头，你就得设法让他消气。

4. 遇到大麻烦;无望成功
If you say that someone has had it, you mean they are in very serious trouble or have no hope of succeeding.

had什么意思

e.g. Unless she loses some weight, she's had it...
除非她减点儿肥，否则她就没戏了。
e.g. He wants actors who can speak Welsh. Obviously I've had it.
他要的是会说威尔士语的演员。明摆着，我是没指望了。

5. 受够了;忍受不了
If you say that you have had it, you mean that you are very tired of something or very annoyed about it, and do not want to continue doing it or it to continue happening.

had

e.g. I've had it. Let's call it a day...
我受不了了。今天就到这儿吧。
e.g. I've had it with that kind of treatment of Americans.
我再也忍受不了那样对待美国人了。

1. 民政事務總署：由葵青民政事务处,葵青区议会及相关部门代表组成的督导委员会於二零零二年三月二十一日成立,并已於二零零五年四月十八日通过由AD+RG所提交之大纲设计 民政事务总署(HAD)及香港房屋协会(HKHS)於二零零六年十月协议香港房屋协会将对是项计划作出最多一千万港元资助,

2. 水平配线区：(2)水平配线区(HAD)设计说明为了提高数据中心机房内网络设备的稳定性,尽可能减少网络设备跳线的插拔,水平配线区(HAD)的水平配线机柜采用两个配线架相互交叉连接,其中一个配线架采用RJ45-IDC端接方式连接交换机,

3. 感温式装置：hacksaw structure 锯齿状构造 | HAD 感温式装置 | hadal depth 超深深度

4. had：hospital anxiety and depression; 医院焦虑抑郁量表

5. had：home affairs department; 民政事务总署

6. had：high acutance developer; 高锐度显影液