你可以在字典中找?
go -goes-going-went-gone
know - knows - knowing-knew-known
speak - speaks - speaking - spoke - spoken
watch - watches - watching - watched-watched
excite - excites - exciting - excited-excited
make - makes - making -made-made
practice [美国英语]- practices-practicing-practiced-practiced
hide - hides - hiding-hid--hid(或 hidden)
learn - learns - learning - learnt 或learned - learnt 或 learned
ask - asks-asking-asked-asked
use -uses-using-used-used
keep - keeps--keeping-kept-kept
study - studies - studying-studied-studied
wire - wires-wiring-wired-wired
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