试题题干
Translate the following sentence into Chinese.
At present we can go back 10 to 12 billion years. We have to go a bit farther back still, and maybe catch them in the act of birth.
参考答案
试题解析
考点：go back to 追溯到；a bit farther再远一些；in the act of birth形成时的实况。
句子结构：第一句At present为时间状语。第二句主语为We，谓语动作有两个， go a bit farther和catch them。