`-` CĐK Loại `1` : Diễn tả hành động có thật ở Hiện tại

`+` If - clause : Thì HTĐ : S + Vs / es

`+` Main - clause : Thì TLĐ : S + will + V

`-` CĐK Loại `2` : Diễn tả hành động không có thật ở Hiện tại

`+` If - clause : Thì QKĐ : S + Ved / V2

`+` Main - clause : Thì TLTQK : S + would + V 

`-` HTTD `->` QKTD : S + was / were + V-ing [ MĐ If ]

`*` " Were " đi với tất cả các chủ ngữ trong mệnh đề If [ ĐK Loại `2` ]

`1`.If you hurry up , you won't be late for the train

`2`.If you don't keep your feet dry , you will catch a cold

`3`.It that book weren't too expensive , I would buy it

`4`.If it weren't raining , we could have lunch in the garden

`5`.Unless you wear your coat , you will be cold

`6`.If I don't feel better , I won't go to the beach tomorrow

`7`.If you press this button , the machine will stop

`8`.If I were a doctor , I could save the child's life

`9`.If I had enough money , I could buy that dictionary

`10`.Unless you study harder , you won't pass the exam

`11`.If the weather weren't too cold , we could go swimming

`12`.If I weren't busy , I could go to the cinema with you

`13`.If we had a tent , we could go camping

`14`.Unless you are careful , you will cut yourself with that knife

`15`.If Mr.Loc had a car , he wouldn't have to go to work by bus

`\text{# TF}`