Cách chuyển từ câu dạng quá khứ đơn sang dạng hiện tại hoàn thành

`+` S + V2/ed + .... + (mốc thời gian)/(khoảng thời gian + ago)

`->` S + have/has + (not) + V3/ed + (since + mốc thời gian)/(for + khoảng thời gian)

`+` S + started/began + to V/V-ing + ...

`->` S + have/has + V3/ed + ... + (since + mốc thời gian)/(for + khoảng thời gian)

`+` The last time + S + V2/ed + .... + was _____ (khoảng thời gian) ____

`->` S + have/has + not + V3/ed + (since + mốc thời gian)/(for + khoảng thời gian)

`---------`

`1.` I haven't traveled to Paris since last year.

`2.` She hasn't visited her grandparents for two years.

`3.` We have started this project since last month.

`4.` He has finished reading the book for two days.

`5.` They haven't sold a new car for a week.

`6.` We haven't gone on a road trip for two months.

`7.` He has received the award since last week.

`8.` They haven't played soccer since April.

`9.` I haven't saw her at the party for two days.

`10.` They haven't bought a new book since last month.

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