The study said that of the three engines ,Altavistahe study said _英语解答

The study said that of the three engines ,Altavista
he study said that of the three engines ,Altavista had 28
percent coverage,Northern light about 20 percent coverage and Excite about 12 percent coverage.
问：that指代什么

人气：281 ℃　时间：2019-10-23 02:49:40

解答

that引导,或者具象一点可以理解为后面要解释的东西的整体.不指代什么.即使没有that,换成一个逗号也可以.
Vicky