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The rule change is the same as in the past tense, only the irregular change will have the case of +en or +n, but this situation is more common in the irregular change.
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Looking at English word formation, you can find some patterns of variation in irregularly conjugated words.
In fact, most of them usually end with +ed. Some want to change the vowels in the word, and the specific word needs to be analyzed specifically.
To be precise, we can only find patterns for most of the words. Some of the irregular variations of words still require us to memorize by rote.
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No rules are the biggest rule, so remember it.
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The simple past tense is used to denote an action or state of being that took place at a certain time in the past.
1. Add ed directly
2. (ending in e) add d
3. (ending with the consonant letter + y) change y to i plus ed
4. (Stressed closed syllables ending with vowel letters plus one consonant letter) double writing ending consonant letters plus ed
5. There are two kinds of irregular changes: unchanged forms and special changes.
General interrogative sentences.
DID + subject + predicate verb form + other.
was were+subject+predicate.
Example sentence: did you do homework?
Special interrogative sentences.
Special question word + did + subject + verb form + other?
Special interrogative word + was were were + owner pronoun ....'s+sth.?
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It's not quite the same. Some words are written in the same way as past participles, like the past tense of visit and the past participle are followed by ed, but some are more special, like wake, the past tense is woke, and the past participle is the past tense and the past participle is cut like the archetype. Most of the verbs have the same past tense and past participle, but there are some verbs that have different past tense and past participles.
Details can be found in the appendix at the end of the relevant dictionary.
The infinitive is that"to + verb form".Indefinitely"means, not limited by the subject. For example, the first verb want is followed by an s because want is a predicate in the sentence and is limited by the subject.
This sentence is in the simple present tense, when the subject is singular third person, the predicate verb must be followed by eat as the verb is indefinite, not subject to the subject'Qualify, still use the original form eat, and make the object in the sentence.
The rules for the formation of the past participle of a regular verb are the same as the rules for the formation of a cluster of words in the past tense of a regular verb. The four-point rule of change:
1) For general verbs, add "-ed" directly at the end of the word. It should be noted, however, that past participles are not in the past tense).
work---worked---worked,visit---visited---visited
2) Verbs ending with an unpronounced "e" should only be added with a "d" at the end of the word.
live---lived---lived
3) Verbs ending in "consonant letter + y", will"y"becomes"i"and add "-ed".
study—studied—studied,cry—cried—cried,try—oaklingtried—tried,fry—fried—fried [1]
4) Stress the end of the closed syllable, with only one consonant letter at the end, first double write the consonant word as if renting, and then add "-ed".
stop—stopped—stopped,drop—dropped—dropped
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1) For general verbs, add "-ed" directly at the end of the word.
2. Verbs ending with an unpronounced "e" should only be added with "d" at the end of the shirt.
3. Verbs ending with "consonant letters plus y", will"y"becomes"i"and add "-ed".
4. Stress the end of the closed syllable, with only one consonant letter at the end, or except for r, y, and x, write the consonant letter in Shuangzhongchang first, and then add "ed".
5. For verbs ending in c, change "c" to "ck" and add "ed".
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The rule of change of the past participle mountain good: generally add ed after the original form of the verb; Verbs ending in e add d directly; Verbs ending with a consonant letter plus y should be changed from y to i and ed added; Words ending with a vowel letter plus y are directly added with ed.
Five rules of variation
There are five rules for conjugation of past tense and past participle of verbs, which are detailed as follows:
1. Generally, -ed is added after the original form of the verb.
e.g. look; looked;looked;call;called;called
Note: -ed is pronounced as [t] after a clear consonant phoneme, [d] after a voiced consonant, [d] after a vowel, and -ed is pronounced as [id] needed [ni:did] after [t], [d].
2. Verbs ending in -e are directly added with -d.
e.g. move; moved;moved;phone;phoned;phoned
3. Verbs ending with consonant letters plus y, change y to tease lead i, and then add -ed.
Example: study; studied;studied
4. Words ending with vowel letters plus y are directly added with -ed.
e.g. play; played;played
5. For stressed closed syllable words with only one consonant letter at the end, double write the consonant letter and add -ed.
e.g. stop; stopped;stopped
Past participles are commonly used
be(am,is,are) (是)was,were been
begin begun
drink drank drunk
ring: rang rung
sing (singing) sang sung
swim swam swum
blow blew blown
drew drawn
fly (fly) flew flown
grow grown
know knew known
throw: threw thrown
show showed shown
Break broke broken
Choose Chose Chosen
forgot forgot (forgot).
speak, speak, spoke spoken
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