Was his average speed incorrectly declared to be 299 miles p

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/15 08:59:52

Was his average speed incorrectly declared to be 299 miles per hour or 289 miles per hour?
请解释一下declared to be,我不懂这个to be是怎么回事,是本来就declare to do 还是什么词组,如果直接declared 299 miles可以吗,把to be 去了,可为什么要加to be,请详解

1 declare a to be b 宣布A成为B.declared to be- - - 被动语态----被宣布成为 -- -
declare(谓语) A（宾语） to be B （宾语补足语）
be declared(谓语) to be- - - （主语补足英）

Was his average speed incorrectly declared to be 299 miles p his average speed had been 299 miles per hour Campbell was disappointed to learn that his average speed ha His average speed had been 301 miles per hour.句子成分 GRAHAM WALKED TO SCHOOL AT AN AVERAGE SPEED OF 3 MILES AN HO 求：the average speed over the 8 miles is 33 miles per hour.怎么一道英文数学题,求解Becca runs at an average speed of 4 miles per hour He would be able to reach the Pole------was 300 miles away his average speed had been 301 这里面的been是什么用英语单词the car’s top speed,an hour,100 miles,will be 组成一个句子英文数学题Ben cycles to a city at average speed X and returns at 英语翻译Esther drove to work in the morning at an average speed