(1) The point is that ... 重点/关键是…….
例句：The point is that you have to keep your promise to help her with
her English.关键是你得遵守诺言,帮她学习英语.
(2) The chanceis that … 有可能……
例：The chance is that he will succeed. 他很有可能成功。
(3) The fact is that … 事实是……
例：The fact is that he hasn’t yet recover from illness.
事实是他还没有康复呢。
(4) The problem/question is that … 问题是……
例：The question is whether we should ask them for help.
问题是我们是否应该向他请求帮助。
(5)That is ---
例：That is where Lu Xun used to live. 这是鲁迅过去住过的地方。