問問過去進行式既問題

Use of Past Progressive 過去進行式

(1) puts emphasis on the course of an action in the past

Example: Tom was wearing glasses (in the classroom) yesterday. (you refer to "the two seconds" during which he was wearing glasses)

(2) two actions happening at the same time (in the past)

Example: While Tom was wearing glasses yesterday, Mary was "also" wearing glasses.

(3) action going on at a certain time (time interrupt) in the past

Example: When Tom was wearing glasses yesterday, the teacher asked him to take it off.


想問問宜家我可唔可以講 "Mary and Tom are wearing glasses at the same time yesterday."

Your sentence is wrong.

You can say in two ways:
1. Tom and Mary were wearing glasses at the same time yesterday. (any time interrupt within the two-second duration)
2. Tom and Mary both wore glasses for the same duration (time span, period of time) yesterday. (the entire two-second duration)

2015-03-30 02:34:56 補充：
1. Tom and Mary were wearing glasses at the same time yesterday. (they may not have worn glasses for the same duration of time)

Mary and Tom WERE wearing glasses at the same time yesterday."

The past continuous:-
Two actions happened in the past at the same time.The past continuous tense is used for the longer action.
---When 2 sec. only passed, Mary and Tom were wearing glasses at the same time yesterday.
---=When the clock struck 2 sec. only,Mary and Tom were wearing glasses at the same time yesterday.

It should be ' Mary and Tom were wearing glasses at the same time yesterday'.