As a way of increasing the depth of our Japanese knowledge Yasuke Tips has suggested using Yahoo ChieBukuro.
The following is an example search.
Let’s say you are helping a Japanese person with their business English (or in my case, writing a self-help blog for them). You give them an article to read and you want to ask them – rhetorically – if they understood it. Which of the following would you use:
「ご理解いただけましたか？」 と 「ご理解いただけたでしょうか？」
And ChieBukuro with the answer:
(P.S. This content will be included later in Full Yasuke! Our textbook of Japanese and Guide to teaching Japanese. Check it out!)