The five progressive tenses in English are: present progressive (e.g., I am eating), past progressive (e.g., She was watching), future progressive (e.g., They will be sleeping), present perfect progressive (e.g., We have been studying), and past perfect progressive (e.g., He had been working).
The past perfect progressive tense of "look" is "had been looking."
The past perfect progressive tense of "clean" is "had been cleaning."
The past perfect tense is created with the auxiliary verb had and a past participle. The past perfect tense of complain is had complained. The past perfect progressive tense is created with had + been + a present participle. The past perfect progressive of complain is had been complaining.
The past progressive tense has two forms: simple past progressive (e.g., "I was reading") and past perfect progressive (e.g., "I had been reading"). Both forms indicate an ongoing action in the past.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
The past perfect progressive tense of "to investigate" is "had been investigating."
the form of the past tense are past progressive,past perfect progressive,past perfect simple.
The five progressive tenses in English are: present progressive (e.g., I am eating), past progressive (e.g., She was watching), future progressive (e.g., They will be sleeping), present perfect progressive (e.g., We have been studying), and past perfect progressive (e.g., He had been working).
The past perfect progressive tense of "look" is "had been looking."
Past progressive tense.
The past perfect progressive tense of "clean" is "had been cleaning."
The past perfect tense is created with the auxiliary verb had and a past participle. The past perfect tense of complain is had complained. The past perfect progressive tense is created with had + been + a present participle. The past perfect progressive of complain is had been complaining.
The past progressive tense has two forms: simple past progressive (e.g., "I was reading") and past perfect progressive (e.g., "I had been reading"). Both forms indicate an ongoing action in the past.
past: ran past perfect: had run past progressive: was/were running past perfect progressive: had been running
The past perfect progressive tense of the verb "try" is "had been trying."
Use past progressive tense to indicate an action that was ongoing in the past. Use past perfect progressive tense to show a continuous action that started before a certain point in the past and continued up to that point.