i think they were sth这句句子的时态是什么?为什么前面用一般现在的think后面又用were

I think they were about to fall, Yes.But I think they were t_ crowded I think they were Canadian.I don't think they were.They can't have been Canadian.They must have been Australian.帮我看看有无语法错误 I didn't think they were ugly和Why would I think it's ugly 为什么一个用were一个用 is?I didn't think they were ugly.Why would I think it's ugly? 中文翻译英文;If I were they ,I would think of using signs. 连词成句they,think,the,were,did,telling,I,truth,not i think they were sth这句句子的时态是什么?为什么前面用一般现在的think后面又用were Well ,I think they will. I think they were about to fall, as if to find a solid and reliable shoulder and one can.是什么意思 I heard this band once before and didn’t think they were all that hot.如何翻译. I love the races on the dragon boat festival.I think （ ）fun to watchA. it'sB. they'reC. it wasD. they were should have done的用法i should listen to my parents,because i think they are right.i should have listened to my parents,because i think they were right.用这两个句子为例子帮我分析下, betty and her mother are arriving.oh,really?i _____ they were coming tomorrow.A.think B.have thought C.will think D.thought正确答案是什么,解析. 英语翻译Gloria:Nice to meet you.I think I remenber you from the photographs.Ben:I hope they were good ones. Does it have wrong.They were talking on the phone yesterday.I dont think this sentence is wrong.But I don't know the wrong. I did think that they were (not) safe standing on the roof.上面的did如果是强调think,那么not应该放在did后面还是were的后面?为什么? I think they are at home? i think they're necessary sometimes翻译