Thank you for correcting my last sentences. I forgot to include a few more on the same subject.

1) Chaucer probably began writing the Canterbury Tales in about 1387 but he never completed it.
2)It was a huge project which would have included 120 tales if it had been finished. Actually, he only wrote twenty-four.
3) Actually, many of the pilgrims are portrayed physically, through detailed description of their clothes and tools, showing their characters and social standing.
4)The pilgrims are often described morally, too, and we are told their qualities and weaknesses.
5) Chaucer is very modern in the way he suspends judgement on his characters, allowing them free voice so that his readers can decide for themselves who are the more or less preiseworthy.
6) The descriptions of the pilgrims differ in length, point of view and tone. Some focus on what the pilgrim wears, some on what he does or thinks. 7)They also cover a wide range of themes. Among the themes are love, marriage, corruption, hypocrisy and chivalry.
8) The route the pilgrimage takes is also significant. The pilgrims begin at Tabard Inn in London, a place which is linked with pleasure, and travel towards Canterbury Cathedral, a symbol of the holy, celestial city of Jerusalem.
9) The pilgrimage turns therefore into a metaphor for life (OR It becomes the allegory of the course of human life?). 10)In other words, we are all pilgrims on the way to the heavenly city, and every journey reflects the basic pattern of existence.

#1. comma before but

#2. I would put a semi-colon after finished; then I would use 'however, he only wrote.....
#3 Leave actually off. No comma after 'physically'. Make description plural.
#4. Use also either at the beginning of the sentence or following the verb and leave off "too".
;) Check spelling of the last word in #5

#9. Either of those sentences would be fine.

No problem! Here are the additional sentences you provided, and a brief explanation of each:

1) Chaucer probably began writing the Canterbury Tales in about 1387 but he never completed it.
Explanation: This sentence states that Chaucer started writing the Canterbury Tales in around 1387 but did not finish it.

2) It was a huge project which would have included 120 tales if it had been finished. Actually, he only wrote twenty-four.
Explanation: This sentence emphasizes that the Canterbury Tales was intended to be a large collection of 120 stories, but Chaucer only wrote twenty-four of them.

3) Actually, many of the pilgrims are portrayed physically, through detailed description of their clothes and tools, showing their characters and social standing.
Explanation: This sentence points out that Chaucer uses detailed descriptions of the pilgrims' appearance, clothing, and tools to reveal their personalities and social status.

4) The pilgrims are often described morally, too, and we are told their qualities and weaknesses.
Explanation: This sentence highlights that Chaucer also describes the moral qualities and weaknesses of the pilgrims in addition to their physical portrayals.

5) Chaucer is very modern in the way he suspends judgment on his characters, allowing them free voice so that his readers can decide for themselves who are the more or less praiseworthy.
Explanation: This sentence discusses Chaucer's approach of not passing judgment on his characters, but instead allowing the readers to form their own opinions about which characters are more or less praiseworthy.

6) The descriptions of the pilgrims differ in length, point of view, and tone. Some focus on what the pilgrim wears, some on what he does or thinks.
Explanation: This sentence explains that the descriptions of the pilgrims in the Canterbury Tales vary in terms of length, perspective, and tone. Some descriptions emphasize their clothing, while others focus on their actions or thoughts.

7) They also cover a wide range of themes. Among the themes are love, marriage, corruption, hypocrisy, and chivalry.
Explanation: This sentence states that the descriptions of the pilgrims in the Canterbury Tales explore various themes, including love, marriage, corruption, hypocrisy, and chivalry.

8) The route the pilgrimage takes is also significant. The pilgrims begin at Tabard Inn in London, a place which is linked with pleasure, and travel towards Canterbury Cathedral, a symbol of the holy, celestial city of Jerusalem.
Explanation: This sentence points out that the route of the pilgrimage in the Canterbury Tales holds symbolic significance. The journey starts at the Tabard Inn in London, associated with pleasure, and ends at Canterbury Cathedral, symbolizing the heavenly city of Jerusalem.

9) The pilgrimage turns therefore into a metaphor for life. (OR It becomes the allegory of the course of human life?)
Explanation: This sentence highlights that the pilgrimage in the Canterbury Tales becomes a metaphor for life, symbolizing the journey that all individuals undertake.

10) In other words, we are all pilgrims on the way to the heavenly city, and every journey reflects the basic pattern of existence.
Explanation: This sentence summarizes the idea that we are all like pilgrims on a journey towards a heavenly destination, and the Canterbury Tales portrays this journey as representative of the fundamental pattern of human existence.