the answer is swan both times you would say:
i saw a swan
and
i see a swan
you could use it in the future tense e.g i will be getting a hamster on saturday. for the past tense you would use been. for the present you could use something like doing
Used is the past participle; using is the present participle.
For a regular verb let's use "answer". Present: answer, Past: answered, Past Participle: answered. For an irregular verb let's use "run". Present: run, Past: ran, PP: run.
Use "was" when referring to past events or actions, while use "is" when referring to present or ongoing events or states. For example, "She was happy yesterday" (past) and "She is happy now" (present).
I had is past tense. I have would be the present tense. And For he/she/it use has. He has a new car.
"do" refers to the present, and "did" refers to the past.
"is' is present tense. For past tense use was or were.
The present and past particle of the butterfly is butterflies. butterfly is a noun and doesn't have a present and past participle
you could use it in the future tense e.g i will be getting a hamster on saturday. for the past tense you would use been. for the present you could use something like doing
You should use present tense.
Used is the past participle; using is the present participle.
For a regular verb let's use "answer". Present: answer, Past: answered, Past Participle: answered. For an irregular verb let's use "run". Present: run, Past: ran, PP: run.
When they are necessary
You use the past tense of a verb (e.g. sang) when the subject is being talked about in the past (the simple past tense). You use the past participle (e.g. have/has sung) when the subject is being talked about in the present (the present perfect tense). "Sung" is the past participle and "have/has" is an auxiliary verb that implies that the subject is referring to a past action in relation to the current present state.
You use the past tense of a verb (e.g. sang) when the subject is being talked about in the past (the simple past tense). You use the past participle (e.g. have/has sung) when the subject is being talked about in the present (the present perfect tense). "Sung" is the past participle and "have/has" is an auxiliary verb that implies that the subject is referring to a past action in relation to the current present state.
is - is present tense. He is from China. was - is past tense. He was sick last week.
In written language. When they speak of past events, they use present perfect (conversational past).