Question

4．約翰過去常和他的朋友在網(wǎng)上聊天．（ used to ）
John used to chat with his friend on the Internet．

Answer 1

分析 John used to chat with his friend on the Internet．

解答 答案：John used to chat with his friend on the Internet．結(jié)合句意是表達(dá)過去常常結(jié)合所給的used to用used to do sth，主語John，chat with sb與某人聊天，on the Internet在網(wǎng)上，故答案是John used to chat with his friend on the Internet．

點評 used to+do："過去常常"表示過去習(xí)慣性的動作或狀態(tài)，但如今已不存在．
Mother used not to be so forgetful．
Scarf used to take a walk．（過去常常散步）
be used to+doing：對…已感到習(xí)慣，或"習(xí)慣于"，to是介詞，后需加名詞或動名詞．
He is used to a vegetarian diet．