摘自:http://www.english-for-students.com/Use-of-Words.html 1. Use of At least when referring to a number:
The phrase at least 50 percent is preferable to the phrase 50 per cent or more than 50 per cent.
Similarly, the phrases ‘maximum of 50 percent’ and ‘at the most 50 per cent’ are preferred to the phrase ’50 per cent or less than 50 per cent’.
Example-1:
• Several studies have found that the corollary patients who exercise most actively have half or less than half the chance of dying of a heart attack as those who are sedentary.
This sentence is wrong one.
The correct sentence is:
• Several studies have found that the corollary patients who exercise most actively are at least fifty percent less likely than those who are sedentary to die of a heart attack. |