Had fallen.
The past perfect tense of "fall" is "had fallen."
The past participle of FALL is FALLEN.--The past participle is the form of a verb that is used in the perfect tenses, the passive tenses, or as an adjective. With regular verbs the past participle is constructed (verb)+ed.(For some verbs the letter T traditionally took the place of -ED.)But FALL is an irregular verb.The past simple (simple past) of fall is fell.The past participle of FALL is FALLEN.Examples:A fallen angel. (adjective)My camera has fallen in the water. (present perfect)I was very worried because my camera had fallen in the water. (past perfect)Having fallen, the ice dance champion lost all hope of winning the competition. (present participle of 'have' + past participle of 'fall', used to indicate which one of two events in the past occurred first)For references, see Related links below.
Past perfect, present perfect and future perfect.
Past perfect is formed with - had + past participle.The past participle of shout is shoutedTherefore the past perfect verb is -- had shouted
Simple past perfect is 'I have tried'. Past perfect continuous is 'I have been trying'. Past perfect subjunctive is 'I had tried'
The present perfect tense of fell (to knock, strike, or cut something down) is have felled. Fell is also the past tense of fall. The present perfect tense of fall is have fallen.
The past perfect tense is "had thought"
Had turned is the past perfect construction. Use had + past participle to create the past perfect tense.
You can't form past perfect tense with went. Went is the past of go.The past perfect is formed with -- had + past participle.The past participle of go is gone, past perfect = had gone
The past perfect is 'had asked'.
The past perfect tense of open is 'had opened'.
There is no past perfect tense of sat. Sat is the past tense and past participle of sit.There is a past perfect of sit.Past perfect is formed with had + past participle. The past participle of sit is sat. So the past perfect of sit is: -- had sat.eg We had sat in the car all day.