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莱山新媒体 2023-07-11 450 10

be beneficial to... 对......有益

高三复习M7U2清单
be beneficial to...   对......有益=be of(great)benefit to 对······很有好处 
prove beneficial to mankind 
被证实对人类有益
for the benefit of/for sb's benefit   为了·······(的利益)
sth.benefit sb.某物得益某人→sb.benefit from/by...=profit from/by...从...中得益 
He possessed great self-confidence.他拥有极大的自信。 
=He was possessed of great self-confidence.
be possessed with/by fear 被恐惧支配
possession n.[U]拥有; [C]财物,所有物(常用pl.)
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现在完成进行时
表示从过去某一个时间开始一直延续要现在的动作, 这个动作可能刚刚结束,或者可能要继续进行下去。 She has been working in Guangzhou since 1985 。
过去完成进行时
表示过去某个时间以前已经开始而又延续到过去这个时间的动作。 可能刚刚停止,也可能还在继续。 He told me that he had been a teacher of physics for more than twenty years 。

sb. have possession of sth. 拥有........
sb. take/get possession of sth. 拿到,占有·······
sb.come into possesion of sth.开始占有;继承(财产等)
sb.be in possession of sth. 拥有
sth. be in the possession of sb.=sth.be in one's possession(某物)为(某人)所有
be of vital importance 极其重
be vital to/for sb./sth. 对···极重要
It is vital for sb. to do sth  做某事对某人来说极其重要 
It is vital that . . . (should) do ....             .....十分重要 

在表示时间或条件关系的主从复合句中,遵照“主将从现”原则,主句用将来时态,从句用现在时态。
一般现在时
表示现在经常或反复发生的动作或存在的状态,常和often , always, usually ,sometimes,everyday 等时间状语连用;
表示主语的特征、性格、能力等;
表示客观事实或普遍真理;
表示安排或计划好的将来要发生的动作;The plane takes off at 10 am 。

Without the air to hold some of the sun’s heat, the earth at night _________, too cold for us to live.
A. would be freezing cold B. will be freezing cold 
C. can be freezing cold D. is freezing cold
But for the English examination,  I ________________last Sunday.
A.went to the concert B. would have gone to the concert 
C.would go to the concert D. had gone to the concert[来源:学科网]

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