Usage
The te form is used in requests with kure and
kudasai. For example Tabete kudasai "Please eat (this)."
With the verb iru it can mean "to be doing": matte iru: "I
am waiting" or "to do": shitte iru means "I know". In speech, the
"i" often disappears, so matte iru becomes matteru and
shitte iru becomes shitteru.
With the verb oku it means "to do in advance". o bentō o tsukutte oita: "I've already made a boxed lunch". In speech, in
this form the "e" often disappears, so tsukutte oita becomes
tsukuttoita
With the verb aru it forms a kind of passive. It is very common
with the verb kaku, to write. Koko ni moji ga kaite aru:
"There are some characters written here".
With the verb shimau it implies something is completed:
katazukete shimatta "I have finished tidying". It can also
suggest a regretable situation: Watashi no kagi ga kiete shimatta: "My keys have disappeared". The form te shimau is
often contracted to chimau or chau, and the de shimau
form is shortened to jau or jimau in colloquial speech. See
8.2. What are the chau, cha verb endings?.
The te form is also used to join two sentences. Yasukute ii ne: "It's good that it's cheap". It is used with particles in
formations such as te wa ikenai: "You must not ...". For example,
tabete wa ikenai: "Don't eat this", or te mo ii: "You can do
this". For example, tabete mo ii: "You can eat it". The mo
is often dropped, hence this becomes tabete ii.