Traveled
The past of "travel" is: travelled (British English) traveled (American English)
Travel is present tense.Traveled (travelled in British English)is the past tense.
The present tense of travel is:I/You/We/They travel.He/She/It travels.The present participle is traveling (or travelling in British English).
No it is not.The correct past tense of the verb write is wrote.The past participle is written.
"He studies" in the sentence "He studies English in the school" is present tense. "He has studied" is past tense. "He will study" is future tense.
The past progressive tense of travel is:I/He/She/It was traveling.You/We/They were traveling.(Note the British English spelling is travelling).
Both of these sentences are grammatically correct. I am studying is the present continuous tense. I study is the simple present tense.
Both are correct English. The difference is one of tense.
Travel is present tense.
The correct form is "didn't come". In English, the tense is on the first verb in the phrase, so here it is on "did". That is, although "didn't come" is past tense, English only puts the first verb into past. "Didn't came" has two verbs in past tense, so that is wrong.
The past of travel in American English is formed by adding -ed: traveled. In British English it's formed by doubling the 'l' and adding -ed: travelled.
Traveled is the past tense. The present tense is travel.