有關英文句子問題想問問

The sentences are grammatically correct.

However, the second sentence may flow better if you use past continuous tense for the main clause:
"We had a discussion on a future plan from 9:00 to 11:00 this morning. When we were having the discussion, Mary had arguments with Tom."






2014-10-25 13:21:27 補充：
Sorry, I meant the "subsidiary clause".

2014-10-27 04:59:42 補充：
Sorry, wrong again ! Should have been "sub-ordinate" or "dependent" clause.

Today, we had a meeting from nine to eleven in the morning. During the meeting , Mary argued with Tom twice.

這不是英文，你試寫中文，我估你中文都唔掂，新聞會咁寫，民主派與建制派在今早立法會會議中發生激烈辯論，你參考一下。