To write accurate sentences, students need to be aware of the past participle form of verbs. In English, the past participle is often used with the auxiliary verbs "have" and "has" to form the present perfect tense or the past perfect tense. Common verbs in the past participle form include "ground," "baked," "driven," "seen," and "spoken."

Here are some examples of common verbs and their past participle forms:

• Grind becomes ground: The coffee beans are ground before being brewed.
• Bake becomes baked: The bread is baked for 30 minutes.
• Drive becomes driven: The car has been driven for over 100,000 miles.
• See becomes seen: The movie has already been seen by millions of people.
• Speak becomes spoken: English is spoken in many countries around the world.

To easily convert verbs into their past participle forms, students can follow these guidelines:

• For regular verbs, add "-ed" to the base form of the verb. For example: walk becomes walked, play becomes played.
• For irregular verbs, students need to memorize the past participle form. Many common irregular verbs have a distinct form for the past tense and the past participle. For example: speak becomes spoke (past tense) and spoken (past participle).

It is important for students to practice using these verbs in context to ensure they are using them correctly. They can also use resources such as verb lists or online exercises to help them memorize and practice using the past participle form of verbs.