Question

There __this afternoon,You'd better take an umbrella with you.--Ok.,thanks.Ais going to rain

B is going to be rainy C is going to be rain D is goiing to have rain

Answer 1

你好选A

there is 就是客观的“有”的意思。 be going to 是表示将来。
B错， be rainy。there be 句型是没有系表结构的，所以不能用rainy。
C错， 道理同B，there be 没有系表结构。
D错， there be 就是 “有”的意思， have 也是“有”的意思，意思重复。

所以只能选A

Answer 2

b
首先 这是 一个 There s going to 所代表的将来时态、、 然后从 be 后面应是 形容词 rainy 是 形容词 做其系表结构
如果满意 就赞同下

Answer 3

选A，不过我感觉应该是 It is going to rain而不是there is going to rain