senior high school English1.什么情况用have什么情况用have been?a lot of factories____have been set up对 have set up错set up 好像是点动词词组吧.怎能用been?2.their duty is to__their country against foreign enemies's attacks.A def
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![senior high school English1.什么情况用have什么情况用have been?a lot of factories____have been set up对 have set up错set up 好像是点动词词组吧.怎能用been?2.their duty is to__their country against foreign enemies's attacks.A def](/uploads/image/z/10590485-5-5.jpg?t=senior+high+school+English1.%E4%BB%80%E4%B9%88%E6%83%85%E5%86%B5%E7%94%A8have%E4%BB%80%E4%B9%88%E6%83%85%E5%86%B5%E7%94%A8have+been%3Fa+lot+of+factories____have+been+set+up%E5%AF%B9+have+set+up%E9%94%99set+up+%E5%A5%BD%E5%83%8F%E6%98%AF%E7%82%B9%E5%8A%A8%E8%AF%8D%E8%AF%8D%E7%BB%84%E5%90%A7.%E6%80%8E%E8%83%BD%E7%94%A8been%3F2.their+duty+is+to__their+country+against+foreign+enemies%27s+attacks.A+def)
senior high school English1.什么情况用have什么情况用have been?a lot of factories____have been set up对 have set up错set up 好像是点动词词组吧.怎能用been?2.their duty is to__their country against foreign enemies's attacks.A def
senior high school English
1.什么情况用have什么情况用have been?
a lot of factories____
have been set up对 have set up错
set up 好像是点动词词组吧.怎能用been?
2.their duty is to__their country against foreign enemies's attacks.
A defeat B defend 咋选B
3.Coal was formed out of dead forests by chemical__.
A processes B product 咋选A
senior high school English1.什么情况用have什么情况用have been?a lot of factories____have been set up对 have set up错set up 好像是点动词词组吧.怎能用been?2.their duty is to__their country against foreign enemies's attacks.A def
factories与set up 构成谓宾关系
意思就是 要用被动语态
完成时的被动语态就是have/has been done
不能完全靠中文意思来理解的
defeat击败,战胜;使…失败;挫败的意思
defend防护;辩护 保护的意思
可以从意思上理解
还有就是 defeat 不与against连用的
processes复数时是加工;处理的意思(process的第三人称单数形式)
chemical process指特定的化学反应过程
chemical product指化学产品