Neither sentence is correct. Not is in the wrong place. I should not have r u n is right. Should is a defective auxiliary and thus an infinitive must be used after it. There are two infinitives in the active voice and another two in the passive.

Do/does/did is not used in questions 1. with forms of to be : Is he happy? Were they swimming? 2. with perfect and past perfect auxiliaries : Have you seen him? Had it already begun? 3. sometimes with have/has/had when the verb is in the

This sentence looks wrong to me...Please help and tell me why! They have appeared on message boards and in blogs, and spread by word of mouth. Hello Yes, you are correct in thinking that something is wrong with that

Hello everyone, I wish it would stop raining – I know ‘wish’ and ‘would’ are the key to the construction - but I don’t know what the tense is… Subject + wish + it (what is it?)+ would (modal auxiliary verb) + verb + gerund Hi, You

1. There is no objection to the use of time words with the past perfect tense. The objection is when these words are used with the present perfect tense. You may, however, if you wish, replace "last week" with "the previous

May I comment on the first two: (1) When she leaved (the irregular past is "left" -- you have to memorize it), she did not thought twice (after an auxiliary verb such as "did," you ALWAYS use the base form (infinitive without

This is too general a series of questions to deal with here. First, please read these excellent summaries of AUXILIARY VERBS and VERB TENSES .

They had to have that specially made? The sentence is in the past tense. Since English lacks verbs for situations in which person A does something for person B on person B's request, a rather long and awkward structure is used instead: to have

sentence number one "who broke the window" contains a primary form of a verb, the preterite "broke". The second sentence contains a secondary form, the past participle "broken", plus the auxiliary "have".

If you are not sure, you may still be confused even with the best explanations. But here are a few rules and examples: 1) Does he have a car? In question form, even 3rd still takes the bare infinitve form (have) because of the modal word