Name the deadline or milestone from which you will look back.
Future Perfect: Completed by a Deadline
Use the future perfect to look back from a future deadline and confirm what will be complete by then.
Future Perfect
UseDescribe an action expected to be complete before a stated future time or milestone.
Core formsubject + will have + past participle
Time frameby + deadline · by the time + present simple clause
RememberBy marks the latest completion point; until describes continuation up to a point and does not carry the same completed meaning.
ชื่อไวยากรณ์ภาษาไทย — เปิดเมื่อจำเป็น
Future Perfect ใช้บอกว่าสิ่งหนึ่งจะเสร็จเรียบร้อยก่อนหรือไม่เกินกำหนดในอนาคต โครงสร้าง will have + past participle และมักใช้กับ by หรือ by the time
Your goal
By the end of this lesson, you can confirm four future milestones, use by and by the time accurately, identify one deadline risk, and renegotiate one deliverable.
คำอธิบายเป้าหมายภาษาไทย — เปิดเมื่อจำเป็น
บทนี้ฝึกมองย้อนจากเส้นตายในอนาคตเพื่อบอกว่างานใดจะเสร็จแล้ว ณ จุดนั้น พร้อมระบุความเสี่ยงและเจรจาปรับสิ่งส่งมอบอย่างชัดเจน
Progress focus LCFP
LC · Language Control
Control the target pattern so the intended meaning remains clear.
Control the target pattern so the intended meaning remains clear.
FP · Functional Performance
Complete the lesson’s real communication outcome without teacher-supplied sentences.
Complete the lesson’s real communication outcome without teacher-supplied sentences.
Your grammar path
Use will have plus the past participle with by or by the time.
Report milestones, identify risk, and agree on a realistic adjusted commitment.
30-minute lesson route
3 minMilestone baseline
5 minWill have + participle
5 minBy, until, and deadline clauses
6 minListen and track delivery
7 minMilestone negotiation
4 minFeedback and retry
Choose the future checkpoint
Use a launch, event, exam, or travel plan. Put four milestones before a clearly stated deadline.
How to run Stage 1
3 min: Establish one future checkpoint and four milestones.
Build will have plus the past participle
Practise affirmative, negative, and question forms. Keep the completed result visible at the future checkpoint.
How to run Stage 2
5 min: Build future-perfect statements, negatives, and questions.
Use by and by the time accurately
Engduo Audio: Listen for meaning first. Audio never starts automatically.
Identify the checkpoint, completed deliverables, and remaining risk.
Track each deadline, expected completed result, and limitation.
Contrast by Friday with until Friday. After by the time, use a present form to refer to the future: by the time the client arrives.
How to run Stage 3
5 min: Contrast by, until, and by-the-time clauses.
Recover milestones, risks, and limits
Listen to both plans. Record what will be complete, by when, what may remain incomplete, and why.
How to run Stage 4
6 min: Play both plans and map deliverables, deadlines, and risks.
Run a milestone negotiation
Present four future deliverables. Use three future-perfect forms, one accurate by-the-time clause, one risk, and an adjusted commitment that both speakers accept.
How to run Stage 5
7 min: Run the milestone negotiation and adjusted commitment.
Final practice: Confirm what will have been completed by a future checkpoint
Task: Give a deadline briefing with four milestones, three future-perfect forms, one by-the-time clause, one risk, and one negotiated adjustment.
Success: Every completion is anchored to a future checkpoint and the adjusted commitment is both grammatical and operationally realistic.
LC · Language Control
0 Frequent form problems obscure the intended meaning.
1 Meaning remains clear with some prompting or self-correction.
2 Controls will have + past participle and distinguishes by-completion from until-continuation.
FP · Functional Performance
0 Does not yet complete the communication outcome.
1 Completes most of the outcome with visible prompts.
2 Communicates milestones, risk, and an adjusted deadline commitment independently.
How to run Stage 6
4 min: Score LC and FP, repair one checkpoint or form issue, and retry the commitment.
คำอธิบายภาษาไทย — เปิดเมื่อจำเป็นเท่านั้น
ตั้งจุดอนาคตก่อน เช่นภายในวันศุกร์หรือก่อนลูกค้ามาถึง แล้วมองย้อนว่าสิ่งใดจะเสร็จแล้ว ใช้ will have + past participle ระวังว่า by เน้นเสร็จไม่เกินจุดนั้น ส่วน until เน้นดำเนินต่อถึงจุดนั้น
Continue your learning path
Teaching references
CEFR Companion Volume — used for communication outcomes and observable progress.
Content and media rights
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