The Present Perfect Tense and how it Compares to the Simple Past Tense

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Dec 23, 2010 10:17
よろしければ、枚分の添削欄で和訳を追加してください。
If you want to, please add a Japanese translation in the corrections field of each sentence.

この日記は http://lang-8.com/48539/journals/737185/Simple-Past%2C-Present-Perfect-and-Past-Perfect-Tenses の続きです。
This entry is the continuation of http://lang-8.com/48539/journals/737185/Simple-Past%2C-Present-Perfect-and-Past-Perfect-Tenses .

The present perfect tense consists of "have" or "has" followed by the past participle of the verb you are using. Use "have" if the subject of the verb would be described by one of the pronouns I, you, we or they. Use "has" if the subject would be described by one of the pronouns he, she or it.

go/goes: I/you/we/they have gone, he/she/it has gone
sing/sings: I/you/we/they have sung, he/she/it has sung
am/are/is: I/you/we/they have been, he/she/it has been
do/does: I/you/we/they have done, he/she/it has done

Here are some of the situations in which the present perfect tense is used:

(1) A single action or a state which started at a time in the past and continues up to the present moment (the moment when the sentence is said)

"I have enjoyed my vacation so far." (This means that the vacation is not over yet. "I enjoyed my vacation" means that the vacation is entirely in the past.)

(2) A single action which was completed a very short time ago (a very short time before the sentence is said)

"Johnny has finished eating dinner, so he can play with you until it gets dark." (He finished eating dinner just now, or at most a couple of minutes ago. Contrast this with: "Johnny finished eating dinner an hour ago; I don't know where he is now.")

(3) A repeated or habitual action in the past. Usually no specific time for the occurrences of the action is given, and the action is expected to occur again in the future, perhaps many times again.

"My cat has always disappeared when strangers enter the house." (This has happened repeatedly in the past, and I expect it to happen in the future.)

"Recently, she has often gotten back from the office as late as ten o'clock." [Note: in UK English, the past participle of "get" is usually "got"; "gotten" is more common in US English.]

When the verb describes a state, the present perfect tense almost always implies that the person or thing is still in that state at present:

"I have felt sick all morning." (This implies that I still feel sick, and that it is still morning, or just after noon, at the latest. "I felt sick all morning" would only be said after the morning is over, and suggests that I no longer feel sick.)

"He has been very irritable lately." (This implies that he is probably still irritable, so be careful about what you say to him! In contrast "He was irritable yesterday" does not say one way or the other what his mood is today. The speaker may not know. If the speaker does know, there is a slight suggestion that the person being spoken about is not irritable today.)

In general, the simple past tense reports an action or actions which were completed at a specific time or times in the past. It reports this as a fact, and usually says nothing about what is happening now, or what may happen in the future. The emphasis is on the completion of the action(s).

The present perfect reports an action which started in the past but is still in progress, or repeated actions at unspecified times in the past which can be expected to happen again. The emphasis is usually on the present situation, or future expectations based on these past occurrences.

"I have made a lot of mistakes." (The time period when the mistakes were made is not specified. This sentence suggests that I am aware that I may make more mistakes in the future.)
"I made a lot of mistakes." (This is more likely to be said about a specific period of time or a specific activity, such as a test the speaker took. It makes no prediction about making mistakes in the future.)

"He has made me angry." (He did things recently that angered me, and I am still angry.)
"He made me angry." (He did something on a specific occasion, or during a specific period of time, which has already been mentioned before the speaker says this.)

There are times when the present perfect tense and the simple past tense are more or less interchangeable; the contrast is not always as sharp as the examples above suggest.

He has failed the entrance exam three times.
He failed the entrance exam three times.

The difference between these sentences is very slight. The first one is a bit more likely to be said as an explanation of what he is doing now, or how he is feeling now, or his future plans. (Perhaps the translation would end in のです.) The second one is a simple factual statement; it also feels a bit more blunt than the first sentence.

Writing this has tired me out! (You should be able to draw a conclusion about my current state. ^^ )