[There are two activities in this class, climbing trees and crossing the river.]
[There are two phrases in the book, "move forward" and "go ahead".]
请问同位语可以像上面这两个句子这样用吗?
是不是必须写成[There are two activities, climbing trees and crossing the river, in the class]
[There are two phrases, "move forward" and "go ahead", in the book.]
或者把逗号改成冒号,变为
[There are two activities in this class: climbing trees and crossing the river.]
[There are two phrases in the book: "move forward" and "go ahead".]