subtract的过去式 subtract的过去式是什么

1. 减去（某数）
2. 做减法
3. 去掉
4. 消去
5. 剔除掉
6. 减弱
7. 删除
8. 作减法
9. 扣除
10. 减损，（从整体中）去掉

1. make a subtraction;

   "subtract this amount from my paycheck"
   

2. take off or away;

   "this prefix was subtracted when the word was borrowed from French"
   

1.减;减去
If yousubtract one numberfrom another, you do a calculation in which you take it away from the other number. For example, if you subtract 3 from 5, you get 2.

e.g. Mandy subtracted the date of birth from the date of death...
曼迪用去世的日期减去出生的日期。
e.g. We havesubtracted $25 per adult to arrive at a basic room rate.
我们已给每位成人房客减去了 25 美元，这就是基本的房费价格了。

subtract from (v.+prep.)

下降,降低 be lowerThat will subtract nothing from his merit.那将无损于他的美德。

• Add a moustache, subtract a moustache: nothing would alter his..nondescript appearance.

  出自：B. Chatwin

• A happy frame of mind subtracted ten..years from her.

  出自：R. Frame

1. subtract的基本意思是“减去”“做减法”,主要指数学上的“减去”,即甲数被乙数“减”,而且着重于具体数目,引申还可表示“扣除”。也可喻指使事物的规格、质量等“下降”。
2. subtract可用作及物动词,也可用作不及物动词。用作及物动词时,接名词或代词作宾语。作“减去”解时常接介词from。