Ask for had plus the supplied past participle. Separate that requested form from a plain past narrative that may also describe the same events correctly.
An original yesterday log
Fictional teaching records; all times are on the same morning.
| Record | Supplied time | At the 10:00 checkpoint |
|---|---|---|
| Lee finished the labels | 9:40 | Labeling was complete. |
| Kim arrived | 10:00 | Later past checkpoint |
| Pat went to the supply desk | 9:30 | Trip outward was earlier. |
| Pat returned | 9:50 | Return was also earlier. |
The target sentences are “When Kim arrived, Lee had finished the labels” and “By 10:00, Pat had gone to the supply desk and returned.” Keep the supplied return fact visible: the second sentence does not describe Pat as still away at 10:00.
The past-perfect reference describes had plus the participle and an earlier event considered at a later past time. These records and sentence items are original practice materials.
Compare order before checking form
For Lee, 9:40 precedes 10:00. Ask the learner to identify the completed action and checkpoint before selecting had finished. Feedback can name the exact timestamps supporting completion.
Then give an explicitly different card: Lee finishes at 10:10; Kim arrives at 10:00. Under that new record, labeling is not yet complete at the checkpoint. Clear the old answer rather than carrying had finished into the revised timeline. Do not change the original log silently; label it as a separate hypothetical order-change item.
For Pat, offer had gone, had went, and has gone. The requested past-perfect key is had gone. Went is the supplied simple-past form, while gone is the participle needed here. Has gone uses a different auxiliary tense and does not meet the requested past-perfect construction.
Avoid forcing the tense from a linking word
A sentence such as “Lee finished at 9:40, and Kim arrived at 10:00” is a clear simple-past account of the original log. Do not label it universally ungrammatical because this worksheet targets past perfect. Say “This item asks you to express the earlier completion using past perfect.”
Likewise, before or after can make chronology clear without uniquely requiring this construction. The worksheet's key needs the explicit task and event order, not just a keyword detector.
For local choices, keep the selected log, checkpoint, verb table and key together. A change to the log must update completion status and clear old feedback. Blank is unanswered; reset restores the declared original log and removes choices and explanations.
Copy an event-order practice prompt
Create one complete, self-contained US-English HTML companion for “Before the checkpoint · past-perfect practice”. Return the full HTML document, with inline CSS and any JavaScript needed for the local interactions. Use the original scenario, named records, numbers and expected cases below.
Design the page for this task: use clearly labeled input or source records, a readable result or worked example, and an adjacent explanation of the evidence. Use a restrained visual hierarchy, left-aligned text, readable tables or stacked records, and a responsive layout at 720px and 360px. Provide meaningful labeled controls for Original · 09:40 finish; Hypothetical · 10:10 finish; Lee · completion; Pat · participle; Check; Time hint; Retry; Reset. Use keyboard-accessible native controls and visible focus. Keep the complete content readable without an external dependency.
The following brief supplies the substantive content and constraints. Native-format requests describe the material to represent or copy manually; this HTML must not pretend to create DOCX, XLSX, PDF, PPTX, H5P or another native file, run Python/Flask/Django/Snowflake/Power BI, connect a live service, send messages, or perform an authorized real-world action. Where the task requires a native source, actual observation or separate approval, retain that requirement and leave unsupplied evidence blank.
Prepare an original past-perfect worksheet in US English.
Learner context: [enter or TO CONFIRM]
Past completion events and later checkpoint: [paste same-date timestamps]
Source verbs, simple-past forms and reviewed participles: [paste]
Requested construction and allowed alternatives: [paste]
Any separately labeled order-change scenario: [paste]
Ask what was complete at the supplied past checkpoint, then build had plus
the supplied participle. Keep original event order and return/status facts. An order-change card must update its own key. Do not force past perfect from
before/after alone or label a clear simple-past narrative inherently invalid. Explain a form error versus an answer outside the requested construction. Do not invent completions, participant identities, or learner responses.
Return logs, items, target keys and evidence-based feedback. If requested,
provide HTML keyboard choices/check/retry/reset tied to the exact context. Context changes clear stale answers; reset restores the original log. No open-prose machine grading, response collection or saved student records.
COMPLETE AUTHORED SCENARIO AND EXPECTED CASES
The following is the supplied reading/teaching/calculation record to represent in the companion. Preserve its particular content, examples, source references and unknowns. Wording about a future native implementation refers to that native task, not permission to omit this HTML companion.
# Past Perfect Interactive Worksheet: Check What Was Complete at the Past Checkpoint
Lee finished the labels at 9:40 and Kim arrived at 10:00. A past-perfect worksheet can connect those two records: at Kim's arrival, Lee **had finished** the labels. Keep both times visible so the construction expresses an earlier completion, not a guess based on the word **before**.
Ask for **had plus the supplied past participle**. Separate that requested form from a plain past narrative that may also describe the same events correctly.
## An original yesterday log
**Fictional teaching records; all times are on the same morning.**
| Record | Supplied time | At the 10:00 checkpoint |
| --- | --- | --- |
| Lee finished the labels | 9:40 | Labeling was complete. |
| Kim arrived | 10:00 | Later past checkpoint |
| Pat went to the supply desk | 9:30 | Trip outward was earlier. |
| Pat returned | 9:50 | Return was also earlier. |
The target sentences are **“When Kim arrived, Lee had finished the labels”** and **“By 10:00, Pat had gone to the supply desk and returned.”** Keep the supplied return fact visible: the second sentence does not describe Pat as still away at 10:00.
The [past-perfect reference](https://learnenglish.britishcouncil.org/grammar/english-grammar-reference/past-perfect) describes had plus the participle and an earlier event considered at a later past time. These records and sentence items are original practice materials.
## Compare order before checking form
For Lee, 9:40 precedes 10:00. Ask the learner to identify the completed action and checkpoint before selecting **had finished**. Feedback can name the exact timestamps supporting completion.
Then give an explicitly different card: **Lee finishes at 10:10; Kim arrives at 10:00.** Under that new record, labeling is not yet complete at the checkpoint. Clear the old answer rather than carrying **had finished** into the revised timeline. Do not change the original log silently; label it as a separate hypothetical order-change item.
For Pat, offer **had gone**, **had went**, and **has gone**. The requested past-perfect key is had gone. **Went** is the supplied simple-past form, while **gone** is the participle needed here. **Has gone** uses a different auxiliary tense and does not meet the requested past-perfect construction.
## Avoid forcing the tense from a linking word
A sentence such as “Lee finished at 9:40, and Kim arrived at 10:00” is a clear simple-past account of the original log. Do not label it universally ungrammatical because this worksheet targets past perfect. Say **“This item asks you to express the earlier completion using past perfect.”**
Likewise, **before** or **after** can make chronology clear without uniquely requiring this construction. The worksheet's key needs the explicit task and event order, not just a keyword detector.
For local choices, keep the selected log, checkpoint, verb table and key together. A change to the log must update completion status and clear old feedback. Blank is unanswered; reset restores the declared original log and removes choices and explanations.
Implement the local companion rather than returning a text-only plan. Preserve every numerical fixture and the distinction between illustrative expectations and actual evidence. Any native-runtime or classroom tests mentioned above remain tests to perform in the proper environment; do not mark them passed. Keep edits and practice responses in this open page only, without claiming persistent storage. Provide invalid/missing-input feedback and reset behavior that agree with this specific brief. Do not claim accessibility certification, learning gains, real approvals or test results that were not observed.
Read the 9:40 and 10:10 versions with a teacher and check the answer against the 10:00 checkpoint. Keep the final explanation on what was already complete and why the chosen participle fits had, rather than teaching that one linking word dictates the tense.