Modal 'MUST & CAN NOT' (Bahasa)


Kita menggunakan Must untuk menyatakan bahwa kita yakin bahwa sesuatu itu benar:
-    Kevin has been working all day. He must be tired.
-    Sarah does the same thing every day. She must get bored in her job.
-    Andrew’s house is near the railway station. It must be very noisy.

Tetapi untuk menyatakan kebalikannya, bahwa kita merasa sesuatu itu tidak mungkin terjadi, kita menggunakan Can not/Can’t:
-    Kevin has just had breakfast. He can’t be hungry already.
-    Sarah is not good at Math. She didn’t study last night. She can’t be passing the exam.
-    They moved here one month ago. They can’t know many people.
Bentuk lampau (Past) dari Must dan Can’t adalah Must Have + V3 dan Can’t Have + V3 :
-    I knocked the door many times but nobody opened the door. Kevin must have been asleep.
-    Sarah has lost her wallet. She must have dropped it somewhere.
-    Jason walked past me without speaking. She can’t have seen me.
-    Jason has already resigned from his work. He can’t have been enjoying working there.
-    Jason has already resigned from his work. He can’t have enjoyed working there.
Setelah HAVE boleh menggunakan BEEN + V ing atau langsung V3

Untuk menggantikan Can’t Have, Kita bisa menggunakan Couldn’t Have :
-    She couldn’t have seen me.
-    He couldn’t have been enjoying working there.

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