這兩個連詞同since, as 近義，都有“鑒於某個事實，原因”是之意。
◎considering that 考慮到
Considering that he's only been learning English a year, he speaks it very well.鑒於他只學了壹年， 他英語講得就是很好。
Considering that it is handmade , the price seems reasonable .
考慮到它是手工織成的，價格還算合理。
Considering that he’s only been learning English for a year, hespeaks it very well. 考慮到他學英語才壹年，他英語講得是很好的。
It is still in excellent condition considering that it was built 600years ago.
考慮到它是600年前修建的，應當說它仍處於良好狀態。
◎seeing that 因為，由於，既然
It is still in excellent condition considering that it was built 600years ago.
考慮到它是600年前修建的，應當說它仍處於良好狀態。
Seeing that he was ill, they sent for the doctor.
鑒於他病情嚴重，他們派人請醫生。
Seeing that he was a hard worker, he achieved a lot.
他辛勤工作, 因而取得了不少成就。
Seeing that he’s ill, he’s unlikely to come.
因為他病了，大概不會來了。
Seeing that it’s raining, we’d better stay indoors.
既然外邊在下雨，我們最好呆在室內。