is it enough to have survived for a long time

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/07/01 05:45:19

is it enough to have survived for a long time
it is enough to do (动原）但这是现完这不科学

后面的时间状语是 for a long time,是一段时间,相对应的时态就应该是完成时,那么回到句中就是to + 完成时
再问：可以to 加完成时？那in five years 就一般将来 yesterday 就一过？
再答：可以，to do 动作还没发生。to+完成时，动作已完成； in five years 是一般将来时， yesterday 一般过去时。
再问：具体情况具体分析是不是只有这两种才行其他时态不行？
再答：通常是这样的

is it enough to have survived for a long time is it enough to have survived for a long time?高中英语必修二Unit1 中 Is it enought to have survived for a long time?的意思 is it enough to have survieved for a long time 为什么用have done is it not enough to have a long and happy life with me Is it not enough just to have a long and happy life with me Holiday is coming.It is time to have a long time relax.Our c Life is long enough to change for a better life . It takes a long time to get there和I have been here for a lon it is impolite to look at others for a long time.(用英文解释） it I have been thinking about to purchase it for a long time.这句 Is it good to play computer games for a long time?Why or why