The past participle of "keep" is "kept." It is used in perfect tenses, such as "have kept" or "had kept."
Light is currently considered to be the fastest known particle(s) in existence. There are theoretical particles that can function well past the speed of light. One example of such theoretical particle is the Tachyon.
The past participle of "show" is "shown." It is used in perfect tenses, such as in the sentence "She has shown great talent." Another form, "showed," is the simple past tense.
The past participle of "fight" is "fought." It is used in perfect tenses, such as "has fought" or "had fought." The verb "fight" is an irregular verb, which means its past forms do not follow the standard pattern of adding "-ed."
Now the term negatron is not used; in the past was rarely used to name an electron or an antiproton.
Particles in liquids are held less firmly compared to solids because the intermolecular forces in liquids are weaker, allowing the particles to move around and flow past each other more freely. In solids, the particles are closely packed together with strong intermolecular forces that keep them in fixed positions, giving solids a rigid and definite shape.
Past is : Beat (itself) Past Particle : Beaten
The simple past and past participle is had.
"Encouraged" is the simple past and past participle of the verb "encourage".
The past participle for shrink is shrunk.shrink / shrank / shrunk
The past participle of do is 'done'.
The past participle is burst.
The past participle is drawn.
Been
The past participle (and simple past) is loved.
infinitive: be past: was/were past participle: been
The past tense is took. The past participle is taken.
Lied is the past form of lie.