中国电信 宽带报修:时态问题
来源:百度文库 编辑:杭州交通信息网 时间:2024/05/17 00:59:18
At present many scientists __________(make)a study of living things in the ocean.
为什么用are making而不用have made或were making ?????
为什么用are making而不用have made或were making ?????
At present现在
At present many scientists are making a study of living things in the ocean.
现在科学家们正在研究海洋生物.
At present “目前,现在”
所以句子必须用现在进行时