問英文文法問題

1.現在式:
I study English. (O)
我學英文(我有學英文的習慣)
正確.

2.現在進行式:
I studying English. (X)
我正在學英文
I am studying English. (O)

3.現在完成式:
I have studied English. (O)
我已經學了英文
正確, 但通常要搭配一段時間:
I have studied English for two years. (O)
I have studied English since 9:00am. (O)

4.現在完成進行式:
I have been studying English. (O)
我一直在學英文
正確, 但通常要搭配一段時間:
I have been studying English for two years. (O)
I have been studying English since 9:00am. (O)

5.過去式:
I studied English. (O)
我曾學過英文
正確.

6.過去進行式:
I was studying English. (O)
我當時正在學英文
正確, 但通常要搭配對照過去動作或時點:
I was studying English when you called. (O)
I was studying English at ten last night. (O)


7.過去完成式:
I had studied English before I came to USA. (O)
我去美國前曾去英文
正確.

除了第二個以外都正確.

2.現在進行式:
I studying English.
我正在學英文

I am studying English.