(1) Learn to express something with Past Perfect Tense.

(2) Callum: And also the past perfect.

(3) Ihad finished' is an example of the past perfect.

(4) In stream-of-consciousness texts, past perfect tense serves to shift perspective space[Sentencedict], switch narrative focus and reverse temporal space.

(5) We can use the past perfect tense to talk about an action that happened before another action in the past.

(6) Lin Yutang' s personality shaped the past perfect modality of China ' s cultural transformation on individual level.

(7) B. Fill in the blanks with the past perfect or simple past tense of the verbs in brackets.

(8) We use the past perfect continuous tense to show that an action started in the past and continued up until another time in the past.

(9) Also involved was Past Perfect Productions, which reconstructs archaeological and historical sites through virtual reality.

(10) As you correctly stated, the past perfect tense is used in a sentence that describes two past events that happened at different times, as in the following.

(11) Normally, such sentences in the past perfect follow another sentence in the simple past tense, as in the following example.

(12) We use the past perfect, Action 1 at the end.

(13) A. Fill in the blanks with the past perfect tense of the verbs in brackets.

(14) They are past perfect tense and the Adverbial Clause of Time.

(15) The Past Perfect Tense is formed by combining the auxiliary verb 'had' with a past participle.

(16) The present and past perfect tenses both belong to the perfect tense.

(17) 'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.

(18) 'I had just cooked' is an example of the past perfect, and 'I had just been cooking' is an example of the past perfect continuous.

(19) When you want to express regret about past events, you use the past perfect.

(20) When research process narration mentioned before what described by past tense , we had better use the past perfect tense.

(21) Is comfortable in using verb tenses but needs to practice the use of more complicated tenses like past perfect, conditionals , past modals, etc.