Manhattan语法上面几个句子不明白，希望明白银er帮我解释一下~~谢谢~~

老肉敦

A frightening storm has been lashing South Padre Island,forcing Nataile and Todd to postpone their wedding.
这个has been lashing是什么用法啊？解释说been有to be的意思，has been不是被动么？


If the supplier has signed a binding contract,he would have delivered the goods.
这个has signed又是怎么个情况？


I scored three goals in yesterday’s game,as did Suzanne.
是不是as did Suzanne和as Suzanne did 都是可以的？

谢谢~！！！！

老肉敦

up

nicktian

Has been here means a lasting action or status

AlohaDJ

has been doing是现在完成进行时的形式,不是被动语态,被动语态是be done,不是be doing.

老肉敦

This sentence correctly uses all four members of the -ing Dynasty.The participle frighting is an adj modifying storm.Has been lashing is a working verb in the present perfect progressive tense.It is present perfect because the 1st helping verb in has.It is the progressive version of the present perfect tense because it also includes to be as a helping verb(been).Remember that an -ing word is never a working verb unless it is immediately preceded by a form of to be.The participle frighting works as an adv modifying the verb in the 1st clause(has been lashing).The full adv here is actually the whole participial phrase forcing Nataile and Todd to postpone their wedding.Like many participle adverbs,it tells us a consequence of the action in the clause that it modifies.Finally wedding is a gerund.In other words,it is an -ing form noun derived form a verb(to wed).

这是书上的解释，依然不明白

mboo2005

A frightening storm has been lashing South Padre Island,forcing Nataile and Todd to postpone their wedding.
我当时改成了这样：
A frightened storm has lashed South Padre Island, forcing Nataile and Todd to postpone their wedding.

现在看改的这个句子也不太对，forcing的时态和前面不太相符，应该用什么时态呢

laiweizhou

表示从过去某时开始一直持续到现在的动作，并且还将持续下去。
I have been studing GMAT for nearly 5 months.