（请在使用前对文本的时效性进行确认，内容以全国人大、国务院等公报为准）
第三百零五条 按份共有人可以转让其享有的共有的不动产或者动产份额。其他共有人在同等条件下享有优先购买的权利。
Article 305
A co-owner by shares may transfer the portion of shares he owned in the co-owned
immovable or movable property. The other co-owners have the right of pre-emption
to buy the shares under equivalent conditions.
第三百零六条 按份共有人转让其享有的共有的不动产或者动产份额的，应当将转让条件及时通知其他共有人。其他共有人应当在合理期限内行使优先购买权。
Article 306
Where a co-owner by shares transfers the portion of shares he owned in the
co-owned immovable or movable property, he shall notify the other co-owners of
the conditions of transfer in a timely manner. The other co-owners shall
exercise their right of pre-emption within a reasonable period of time.
两个以上其他共有人主张行使优先购买权的，协商确定各自的购买比例；协商不成的，按照转让时各自的共有份额比例行使优先购买权。
Where two or more co-owners assert their rights of pre-emption, they shall
determine through negotiation the proportion of shares each may purchase; where
no agreement is reached, they shall exercise their right of pre-emption in
proportion to the shares they each own at the time of transfer.
第三百零七条 因共有的不动产或者动产产生的债权债务，在对外关系上，共有人享有连带债权、承担连带债务，但是法律另有规定或者第三人知道共有人不具有连带债权债务关系的除外；在共有人内部关系上，除共有人另有约定外，按份共有人按照份额享有债权、承担债务，共同共有人共同享有债权、承担债务。偿还债务超过自己应当承担份额的按份共有人，有权向其他共有人追偿。
Article 307
In terms of external relations, the co-owners are jointly and severally entitled
to claims and are jointly and severally obligated to perform obligations arising
from the co-owned immovable or movable property, unless it is otherwise provided
by law or where the third person is aware that the co-owners are not in a
relationship of joint and several claims and obligations. In terms of internal
relations, unless otherwise agreed by the co-owners, the co-owners by shares are
entitled to claims and obligated to perform obligations in proportion to the
shares they each own, and the joint co-owners are jointly entitled to claims and
obligated to perform obligations. A co-owner by shares who has performed the
obligation in excess of his shares has the right to contribution against the
other co-owners.
第三百零八条 共有人对共有的不动产或者动产没有约定为按份共有或者共同共有，或者约定不明确的，除共有人具有家庭关系等外，视为按份共有。
Article 308
Where there is no agreement among the co-owners or the relevant agreement is
unclear as to whether the co-owned immovable or movable property is under
co-ownership by shares or under joint co-ownership, the immovable or movable
property shall be deemed to be under co-ownership by shares, unless the
co-owners are in a relationship such as a familial relationship or the like.
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（请在使用前对文本的时效性进行确认，内容以全国人大、国务院等公报为准）