Bob____all day.Could you speak to him now?A.phones D.has been phoning 我选A,为错了This kind of cloth ___very well.C.has been washed D.washes我选C,为什么错了I've heard that Bob _____ back from his journey to Africa.A has come D.had come我

Bob____all day.Could you speak to him now?A.phones D.has been phoning 我选A,为错了This kind of cloth ___very well.C.has been washed D.washes我选C,为什么错了I've heard that Bob _____ back from his journey to Africa.A has come D.had come我
Bob____all day.Could you speak to him now?
A.phones D.has been phoning 我选A,为错了
This kind of cloth ___very well.
C.has been washed D.washes我选C,为什么错了
I've heard that Bob _____ back from his journey to Africa.
A has come D.had come我选D为什么错了?

Bob____all day.Could you speak to him now?A.phones D.has been phoning 我选A,为错了This kind of cloth ___very well.C.has been washed D.washes我选C,为什么错了I've heard that Bob _____ back from his journey to Africa.A has come D.had come我
Bob____all day.Could you speak to him now?
A.phones D.has been phoning 我选A,为错了
因为这里有个all day啊,说明Bob一直都在打电话,而且现在还在打,所以用现在完成进行时,表示过去的某一个动作对现在的影响（现在完成时）,而且这个动作是一直持续的（进行时）,两个综合起来就可以了；
This kind of cloth ___very well.
C.has been washed D.washes我选C,为什么错了
wash 很特殊 要用主动式表示被动式,也就是说它没有被动式的,类似的词还有 系动词 以及 sell 等等,就是几个有翻译出.起来的 都是,比如smell 闻起来 wash 洗起来 等等.
I've heard that Bob _____ back from his journey to Africa.
A has come D.had come我选D为什么错了?
因为前面是 I have heard 是现在完成时啊,所以后面也要用现在完成时 ,如果 前面是I had heard 的话 那就选D.

all day 就说明一天一直在打，用A就不太好，D就是一直在打的意思
D washes 系动词 就得这样用，C被动态是不能在这里用的。
D是过去完成时，是过去的过去，要有个过去的时间点，这里没有。要用C现在完成时

all day. z整天啊
主动表被动

①have been doing，即现在完成进行时，主要表示以下两种情况：1.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。2.表示在[说话时刻之前到现在正在进行]的动作。一般现在时phones与all day连用不妥。has been phoning则体现了一直持续在打电话的意思
②举几个例子就明白了：
You look so beautiful today!

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①have been doing，即现在完成进行时，主要表示以下两种情况：1.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。2.表示在[说话时刻之前到现在正在进行]的动作。一般现在时phones与all day连用不妥。has been phoning则体现了一直持续在打电话的意思
②举几个例子就明白了：
You look so beautiful today!
It smeels wonderful!
It sounds great!
这类句子都是主动形式表被动含义的
This kind of cloth washes very well.这类布很好洗。
③I've heard that Bob has come back from his journey to Africa.
I‘ve=I have，是现在完成时，若选D.had come则为过去完成时，是基于过去的时间点，即过去的过去，换句话说两个动作A和B皆发生在过去，但A更早于B，那么A就是过去的过去了。这里没有相对应的过去的时间点，故选现在完成时has come与have heard匹配对应

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1可以理解为他在抱怨，有感情色彩，英语时态除了区分动作状态有时会有感情的表达，从过去到现在一直在说。eg you are always watching tv ,why not go out?也是抱怨always+现在进行时