occur
现在分词/动名词
occurring
过去分词
occurred
# 141
常规的
come
indicative
|
imperfect
|
present
|
past
|
future
|
conditional
|
|
|---|---|---|---|---|
| s1 |
occur
|
occurred
|
will occur
|
would occur
|
| s2 |
occur
|
occurred
|
will occur
|
would occur
|
| s3 |
occurs
|
occurred
|
will occur
|
would occur
|
| p1 |
occur
|
occurred
|
will occur
|
would occur
|
| p2 |
occur
|
occurred
|
will occur
|
would occur
|
| p3 |
occur
|
occurred
|
will occur
|
would occur
|
indicative
|
progressive
|
present
|
past
|
future
|
conditional
|
|
|---|---|---|---|---|
| s1 |
am occurring
|
was occurring
|
will be occurring
|
would be occurring
|
| s2 |
are occurring
|
were occurring
|
will be occurring
|
would be occurring
|
| s3 |
is occurring
|
was occurring
|
will be occurring
|
would be occurring
|
| p1 |
are occurring
|
were occurring
|
will be occurring
|
would be occurring
|
| p2 |
are occurring
|
were occurring
|
will be occurring
|
would be occurring
|
| p3 |
are occurring
|
were occurring
|
will be occurring
|
would be occurring
|
indicative
|
perfect
|
present
|
past
|
future
|
conditional
|
|
|---|---|---|---|---|
| s1 |
have occurred
|
had occurred
|
will have occurred
|
would have occurred
|
| s2 |
have occurred
|
had occurred
|
will have occurred
|
would have occurred
|
| s3 |
has occurred
|
had occurred
|
will have occurred
|
would have occurred
|
| p1 |
have occurred
|
had occurred
|
will have occurred
|
would have occurred
|
| p2 |
have occurred
|
had occurred
|
will have occurred
|
would have occurred
|
| p3 |
have occurred
|
had occurred
|
will have occurred
|
would have occurred
|
imperative
|
+/-
|
affirmative
|
negative
|
|
|---|---|---|
| s1 |
-
|
-
|
| s2 |
occur
|
don't occur
|
| s3 |
occur
|
don't occur
|
| p1 |
occur
|
don't occur
|
| p2 |
occur
|
don't occur
|
| p3 |
occur
|
don't occur
|
这些动词的意思相似
occur