rare(ly)

1.下面三句意思相同：

• In the old society it was rare for a poor man's son to go to college.
• In the old society it was rare that a poor man's son went to college.
• In the old society it was rarely that a poor man's son went to college.

第三句等于In the old society a poor man's son rarely went to college.

2.注意Rarely do we see such things nowadays等句子里用do we see，不用we see。

3.in rare cases不及rarely普通。