It should be noted here that the time when the verb followed by having appears is before the time when the predicate verb appears in the main sentence. For example, after driving all day, we are too tired. In this example, driving once refers to the state of "we" and "driving all day", and the action of driving occurs before fatigue.
Understand the above concepts and then explain the difference between what has been done and what has been done. The former means active, while the latter means passive. Example:
We were so tired after driving all day. We have been driving all day, and now we are all very tired. Driving means taking the initiative, which means "we have been driving all day";
After being criticized today, he was very sad. He was criticized today, and he was very sad. It is "he" who is criticized. The adverbial of this reason is to modify "he", so it is necessary to use the passive, which has been done.
There is another situation, I have been doing it all the time. If I understand the first two usages, it will be clear that this usage is also active when the verb ing is completed.
Extended data:
Really? Whether at the beginning of a sentence or in a sentence, it is important to understand the nature and usage of this phrase. Structurally, this should be the perfect form of the verb ing. Then its usage has two characteristics:?
1, used as a participle. In a sentence, it is subordinate to adverbial, predicative, attributive and object auxiliary. ?
2. Used as a gerund. In a sentence, it is subordinate to subject, object, attribute and predicative.
According to the above two usages, this phrase can be anywhere in the sentence. The most common having? Done refers to the perfect form of the present participle as an adverbial, indicating that this action occurs before the action indicated by the predicate. What is the usual situation? Really? Driven? All of them? God, us? Used to be. Quite? Tired. ? (own? Driving means "active behavior"). ?
The common exception is subordinate conjunctions? After that? The leading clause is an ellipsis sentence with present participle; ? At this time, after? The second is to have? Is it finished? Or is it basically the same as doing it? For example:
1)? After that? Picking? Up? His? Things, why? In a hurry? Where to? That? Station. ?
2) After that? Really? It's over? His? Task, what? Went? Where to? Go to sleep. ?
1)? And 2) what's the slight difference? After that? +? Really? Is it finished? More emphasis. Since it is a perfect form, the action it represents occurs before the predicate action of the sentence, especially as an adverbial. For example:
Really? It's over? All of them? That? Task,? we? Went? Where to? That? Cinema. After finishing all the tasks, let's go to the movies. The act of completing a task before going to the movies.
Really? Known? That? What's the situation Hmm? They? Is it okay? Deal? With what? That? Question? Effectively. Because of their deep understanding of the situation, they dealt with the problem effectively. Understand the situation first, then deal with the problem.
Really? Done can also be used as an adverbial of participle or after prepositions or special verbs, such as:
1, yes? Is it finished? All of them? This? God? Rest. ? After all this, God is at peace. ?
2. No? Really? Is it finished? It? Right? Me? Have you tried? Here we go again. ? I tried again because I didn't do it right. ?
3. What? Felt? Shame? Yes? Really? Is it finished? So what? Small? Work. ? He felt ashamed that he didn't do much work.
4. Have? Is it finished? His? Homework? What? Played? basketball ? After finishing his homework, he began to play basketball?
5. what? Refuse? Really? Is it finished? It? Are you online? Order? Where to? Save? His? Face. ? In order to save face, he denied doing it.