Weekly Diary∣2013.03.20

I felt not good at Monday morning because went to bed late. When Ivanisevicy and I have finished all works and laid down the bed to sleep, we heard some familiar noise, which was produced by the mosquito and very annoyed. At first, we just tried to ignore the voice and supposed they might disappear soon. But, we found we were wrong very soon as they, the little bloody insect, had flied around our ears with noisy sound and continued to seek the opportunities to absorb our blood. Under this condition, we hardly fell asleep for two hours. So, I decided to go outside and buy mosquito coils back. Afterward, through burning the mosquito coils, the little monsters went out our room eventually. Unfortunately, I still had to get up early at 6 am at Monday morning, that is to say, I just could sleep for four hours. As a result, I felt very tired and lacked the energy to deal with the office affairs, which put me in a foul mind. 

Grammar∣ in which

You can use “in which” as a precise way to introduce a relative clause after a noun that refers to a place or to a time. 

For example

    In my laboratory there is a blue cabinet where old equipment is stored. 
→In my laboratory there is a blue cabinet in which old equipment is stored. 


    The man sat at the computer where his old accounting files were stored. (place)
→The man sat at the computer in which his old accounting files were stored.

    It was a time when the old were revered as sages. (time)
→It was a time in which the old were revered as sages. (time)

Use “in which” to avoid ending a sentence with a preposition, especially in more formal writing. Ending a sentence with a preposition has become more accepted in some formal writing situations, but you will need to refer to your analysis of your audience’s expectations.

For example
This is the computer that the virus was discovered in. (Informal)
You can change it to
This is the computer in which the virus was discovered. (Formal)