...及时态的一致性。下面看两个句子:1. Tom is not present at the meeting because he has gone to Shanghai on business.2. I have been told that Tom is a university student.以上两句中,一个在从句一个在主句,分别使用了现在完成时。▲句1,按说“他去上...
...句子,来回看了好几遍都还是没看懂,因此想请教一下您The geologic timescale is marked by significant geologic and biological events, including the origin of Earth about 4.6 billion years ago, the origin of life about 3.5 billion years ago, the origin of eukaryotic life-forms (l...
第一组:Sb want to do sth Sb demandto do sth或者第二组:Sb mind doing sthSb enjoy doing sth请教老师,1.在以上类似结构中,sb want to do sth 中want 的宾语是 to do 还是to do sth ?还是两者兼可?2. 可不可以这样划分:to do 是want的宾语;然后,sth 是...
_________,we will leave without herA.If she were to fail to come on time B. Should she fail to come on time 老师请问,这题我刚开始选有点犹豫,最后选的是B。是不是因为都是将来的虚拟,但(if)should有“万一”的意味,所以比A跟更合适...