He learned magic by himself 对画线部分提问

He learned songs by listening to tapes.(对画线部分提问） He learned songs by listening to tapes.（对画线部分提问） he learned magic by his.这句话对吗?还有,有he learned magic by himsel He learned skating by himself .同意句 He learned English all by himself He studies for test by making vocabulary lists(对画线部分提问) he can solve the problem by himself (对by himself提问?） He is going to Beijing by himself对by himself 提问 I learned a lot by growing flowers .(就画线部分提问) He came here by bike this morning.画线部分提问.画线部分是by bike he has learned maths (for five years).就画线部分提问 对画线部分提问