when引导时间状语从句能不能省略

Question

if you do not mind,i may bring it to you next time i go to Canada.
上面那个是原句，我认为应该在next time和i go to Canada之间夹一个when。

Answer 1

用作时间状语的关系副词when通常不能省略，但有一种特殊情况，即用于day, year, time等少数几个词后时可以省略(也可换成that)。如：
That was the year (that) I first went abroad.
I'll never forget the day (that) we met.
The second time (that) I saw him was in 2000.
I don't know the exact time (when/ that) the sports meeting will take place.

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