今天的例句 - 以来，来，分之，之后/之前

上班之前，我喝了一杯咖啡。
Before I went to work, I drank a cup of coffee.
我同事中有五分之二是女性。
Among my colleagues, 2 fifths are women.
自住在日本以来，我一天病假都不需要请。
Since living in Japan, I haven't needed one day of sick leave.
(Formal): 我有两年没回过英国了。
I haven't been back to the UK since 2 years ago.
我一直住在这栋（住宅）大楼里，有十九个月了（快两年了）。
For 19 months, I have always lived in this building/apartment block.

今天的例句 - 以来，来，分之，之后/之前

去工作了之前，我喝了一杯咖啡。/去工作之前，我喝了杯咖啡
Before I went to work, I drank a cup of coffee.
同时其中的有五分之二（是）女人。/同事之中有五分之二是女性
Among my colleagues, 2 fifths are women.
住在日本以来，我一直没需要一天的病假。/到日本以来，我没请过一天病假
Since living in Japan, I haven't needed one day of sick leave.
(Formal): 自从两个年以前，我一直没回过英国。/两年以来，我一直没回过英国/从两年之前至今，我一直没回过英国
I haven't been back to the UK since 2 years ago.
十九个月来，我一直住在这家大楼。/十九个月来，我一直住在这家大楼。
For 19 months, I have always lived in this building/apartment block.

今天的例句 - 以来，来，分之，之后/之前

去工作了之前，我喝了一杯咖啡。(我在工作之前喝了一杯咖啡。)
Before I went to work, I drank a cup of coffee.

同时其中的有五分之二女人。(我的同事們，有五分之二是女性。)  *我們很少會直接地說女人
Among my colleagues, 2 fifths are women. 

住在日本以来，我一直没需要一天的病假。(自從我住在日本，我從沒請過一天的病假。)
Since living in Japan, I haven't needed one day of sick leave.

(Formal): 自从两个年以前，我一直没回过英国。(我已經2年沒回去英國了。) *你的寫法沒問題，我提供給您比較口語簡短的說法
I haven't been back to the UK since 2 years ago.

十九个月来，我一直住在这 家  (棟建築公寓)  大楼。
For 19 months, I have always lived in this building/apartment block.

今天的例句 - 以来，来，分之，之后/之前

去工作了之前，我喝了一杯咖啡。
Before I went to work, I drank a cup of coffee.
同时（事）其中的有五分之二（是）女人。
Among my colleagues, 2 fifths are women.
住在日本以来，我一直没需要一天的病假。
Since living in Japan, I haven't needed one day of sick leave.
(Formal): 自从两个年以前，我一直没回过英国。
I haven't been back to the UK since 2 years ago.
十九个月来，我一直住在这家大楼。
For 19 months, I have always lived in this building/apartment block.

今天的例句 - 以来，来，分之，之后/之前

上班前，我喝了一杯咖啡。
Before I went to work, I drank a cup of coffee.
我的同事中有五分之二是女性。
Among my colleagues, 2 fifths are women.
自從在日本生活以来，我没請過病假。
Since living in Japan, I haven't needed one day of sick leave.
(Formal): 我已經兩年没回过英国。
I haven't been back to the UK since 2 years ago.
我已經住在这棟大楼十個月了。
For 19 months, I have always lived in this building/apartment block.