关于过去分词的英语句子填空TAT以下句子都是正确的括号处是我的疑问所在1Thesportsmeeting（held）yesterdaywasagreatsuccess为什么括号内不能填washeld?2Ontheearth,70%ofthesurface(iscoveredwith

Question

关于过去分词的英语句子填空 TAT
以下句子都是正确的 括号处是我的疑问所在
1 The sports meeting （held） yesterday was a great success
为什么括号内不能填 was held?
2 On the earth,70% of the surface (is covered with) water
为什么括号内不能填 covered with?
求救求救啊
不懂啊 真的想努力学好这语法T^T

Answer 1

1.The sports meeting (which was)（held）yesterday was a great success.
The sports meeting 主语
(which was)（held）yesterday 定语从句
was 谓语
a great success 宾语
2. On the earth,70% of the surface (is covered with) water.
70% of the surface 主语
is covered with 被动态, 谓语
water 宾语