“Before they (dance), they (clean) the hall,” how would you conjugate the verbs “dance” and “clean” so that part of the sentence is in the past tense and the other part is in the past perfect?
1. past tense
The past simple is used to express an action that began and ended in the past. The sign to identify this tense is a sentence, often containing past tense adverbs such as “yesterday” (yesterday), “last night/year/month” (night/year/month ago), “before” ( previously). ), “in 1999” (in 1999) or earlier clauses.
(+) S + Vp1 (was/were)…
I did my homework last night. (I did my homework last night.)
We were at home yesterday. (Yesterday we were at home).
(-) S + does not have V (was not/were not)…
He hasn’t played football lately. (He didn’t play football last Sunday)
He wasn’t well last week. (He wasn’t well last week)
(?) Has (was/were) + S + V…?
Did she invite you to the party last night? (Did she invite you to the party last night?)
Were you in a bad mood last year? (They were in bad shape last year, weren’t they?)
V: infinitive / Vp1: past participle verb / Vp2: past participle verb.
The past perfect describes an action that took place and was completed before another action in the past. In which the action happened first: use the past tense (Had Vp2), the action happened later: use the simple past tense (Vp1).
Signs for recognizing and positioning common prepositions and conjunctions in sentences with the past tense: “bis then” (until then), “by the time” (at the time), “before” (before) , “after” (after), “when ” (when), “until the end + time in the past” …
(+) S+ had Vp2…
My mother had made breakfast when I got up. (My mother had finished cooking breakfast when I woke up.)
(-) S+ did not have Vp2…
He hadn’t played soccer until last week. (He had never played soccer until last week.)
(?) Had + S + Vp2…?
Did he go out before you got home? (He was gone before you got home, right?)
Dinh Thi Thai Ha