Question

4．約翰過去周末常和他的朋友在網(wǎng)上聊天．（use；chat；Intenet）John used to chat with his friends on the Internet at weekends．．

Answer 1

分析 John used to chat with his friends on the Internet at weekends．

解答 答案：John used to chat with his friends on the Internet at weekends．表達的是過去常常結(jié)合use用used to do sth，主語John，與某人聊天結(jié)合chat用chat with sb，在網(wǎng)上on the Internet，at weekends．周末，故答案John used to chat with his friends on the Internet at weekends．

點評 used to表示過去常常做某事．
例句：I used to play football after school．過去我常常在放學后踢球．
be used to do的意思是被用來做某事；be used to doing的意思是習慣于做某事．
be used to 被用來做
used to+do："過去常常"表示過去習慣性的動作或狀態(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…已感到習慣，或"習慣于"，to是介詞，后需加名詞或動名詞．
He is used to a vegetarian diet．
Scarf is used to taking a walk．（現(xiàn)在習慣于散步）