The past progressive tense of sleep is was/were sleeping.
The present perfect is -- have /has + past participle = has/have slept.
was/were sleepingI was sleeping soundly last night when the phone rang.
The past perfect tense of thing is had thought.
The past progressive tense of study is:I/He/She/It was studying.You/We/They were studying.
"Sleep" can be both a noun and a verb, so you can use it in the past, present, or future tense. For example, "I slept" (past tense), "I am sleeping" (present continuous tense), and "I will sleep" (future tense).
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
Past progressive tense for "sleep":I was sleepingWe were sleepingYou were sleepingHe/she was sleepingThey were sleeping
the form of the past tense are past progressive,past perfect progressive,past perfect simple.
The past perfect progressive of investigate is had been investigating.
There are actually 6: Present progressive tense Present perfect progressive tense Past progressive tense Past perfect progressive tense Future progressive tense Future perfect progressive tense The progressive tense is also known as the continuous tense.
The past perfect progressive tense of "look" is "had been looking."
The past perfect tense of sleep is had slept.
Past progressive tense.
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 perfect progressive tense of "clean" is "had been cleaning."
There are two types:Past progressive tensePast perfect progressive tense
I/he/she/it was sleeping. You/we/they were sleeping.